Seisen International School

A Faith-Rooted Educational Vision

Seisen International School was founded in 1962 by the Handmaids of the Sacred Heart of Jesus, a Catholic religious congregation, and this founding identity continues to permeate every dimension of school life. The school's guiding philosophy — Love and Service — is not merely a motto but an operational framework that shapes curriculum design, pastoral care, community engagement, and student formation.

The school's mission statement articulates this clearly: Seisen aims to educate future world citizens to become "men and women for others and with others, in the spirit of Jesus Christ." This Ignatian-influenced language reflects a commitment to forming students who are not only academically capable but morally grounded and socially responsible.

Holistic Development in Practice

The philosophy manifests in several concrete ways. The House System — four houses that bring together students across year groups — fosters a sense of belonging and cross-age mentorship that mirrors the communal values of the founding congregation. Social justice and community service are embedded in the curriculum, particularly through the IB's Creativity, Activity, Service (CAS) component at the Diploma level, but also through school-wide initiatives that encourage students to reach out to those less fortunate.

The school's chapel serves as a physical and spiritual anchor on campus, hosting daily assemblies, masses, and reflective gatherings. Even for non-Catholic students — who make up a significant portion of the 40+ nationality student body — the chapel and its associated rituals provide a space for reflection and community.

International-Mindedness and Catholic Values

Seisen occupies an interesting position: it is simultaneously a Catholic school and a deeply international one. The school navigates this by framing Catholic values — compassion, respect, service, open-mindedness — as universally applicable virtues rather than exclusively religious ones. This allows students of diverse faith backgrounds to engage authentically with the school's ethos.

The IB Continuum framework (PYP, MYP, DP) aligns naturally with this philosophy. The IB's learner profile attributes — including being caring, principled, and open-minded — echo Seisen's own core values of Collaboration, Problem-solving, Empathy, Respect, and Open-mindedness.

Pastoral Culture

The school invests significantly in student wellbeing. Social-emotional counsellors, a school nurse, and learning support specialists are all on staff. The emphasis on small class sizes (maximum 25 students) ensures that teachers can build meaningful relationships with each student — a priority that reflects the school's belief that academic excellence and personal flourishing are inseparable.

Humble Beginnings

Seisen International School's story begins in 1962, when the Handmaids of the Sacred Heart of Jesus — a Catholic religious congregation with roots in Spain — relocated a small Montessori kindergarten from Yoyogi to Gotanda in Tokyo. In the same year, the school opened its first Grade 1 class for just seven girls. The name "Seisen" (清泉) means "pure spring" in Japanese, a metaphor the school has embraced: growing from a trickling stream into a substantial educational institution.

Establishing Roots in Yoga

The school's early years were marked by rapid growth in student numbers and programme scope. By 1973, the campus had outgrown its original location and the school relocated to its permanent home at 1-12-15 Yoga, Setagaya-ku — a leafy residential neighbourhood in southwestern Tokyo. The Yoga campus, which the school continues to occupy today, provided the space needed to develop a full K-12 programme.

The first graduating class completed their studies in 1974, a milestone that marked Seisen's transition from a primary school into a full secondary institution. The following year, 1975, the school achieved accreditation from what was then ECIS (now the Council of International Schools), establishing its credentials as a serious international school.

IB Pioneer

Perhaps the most significant milestone in Seisen's academic history came in 1985, when the school introduced the IB Diploma Programme — becoming the first all-girls school in Japan to do so. This was a bold move at a time when the IB was still relatively new in Asia, and it positioned Seisen as a forward-thinking institution committed to internationally recognised academic standards.

Over the following decades, the school expanded its IB offering. The Primary Years Programme (PYP) and Middle Years Programme (MYP) were added, and in 2020 Seisen achieved full IB Continuum accreditation — recognising the seamless integration of PYP, MYP, and DP across the school's K-12 span.

60 Years and Beyond

In 2022, Seisen celebrated its 60th anniversary, reflecting on six decades of growth from seven students to approximately 700, from a single grade to a full K-12 programme, and from a local Catholic school to a globally recognised IB institution. The school's NEASC and CIS accreditations, alongside its IB World School status, confirm its standing in the international education community.

A Coherent Academic Journey

Seisen International School offers one of Tokyo's most coherent K-12 academic pathways. The journey begins in the Montessori-inspired kindergarten, where young learners develop independence, curiosity, and foundational skills through hands-on exploration. From Grade 1, students transition into the IB Primary Years Programme (PYP), which emphasises inquiry-based learning, transdisciplinary thinking, and the development of the IB learner profile attributes.

In middle school (Grades 6-10), students follow the IB Middle Years Programme (MYP), which builds on PYP foundations while introducing more structured subject disciplines and the concept of global contexts. The MYP's emphasis on making connections between subjects and the real world prepares students well for the rigours of the Diploma Programme.

IB Diploma Programme

The IB Diploma Programme (DP) at Seisen (Grades 11-12) offers a comprehensive menu of subjects across six groups:

• Language & Literature: English A (HL/SL), Japanese A (HL/SL)
• Language Acquisition: Japanese B, French B, Spanish B (all HL/SL), Spanish ab initio (SL)
• Individuals & Societies: Economics, Geography, History, Psychology (all HL/SL)
• Sciences: Biology, Chemistry, Physics, Computer Science (all HL/SL), Environmental Systems & Societies (SL)
• Mathematics: Analysis & Approaches (HL/SL), Applications & Interpretations (HL/SL)
• Arts: Music (HL/SL), Visual Arts (HL/SL)

This breadth of offering — particularly the inclusion of both mathematics pathways and multiple language options — gives students significant flexibility in tailoring their diploma to their university aspirations.

University Outcomes

Seisen reports a 100% university placement rate, with graduates proceeding to institutions across Japan, North America, Europe, and beyond. The Class of 2024 destinations broke down approximately as: Japan/Asia 39%, USA/Canada 35%, UK/Europe 14%, with the remainder at other international institutions. While specific Oxbridge or Ivy League counts are not published, the school's profile and IB outcomes suggest regular placement at highly selective universities.

Small Classes, High Standards

With a maximum class size of 25 students and a student-teacher ratio of approximately 7:1, Seisen's academic environment is notably intimate for a school of its size. This allows for differentiated instruction, close teacher-student relationships, and the kind of personalised feedback that IB assessment demands. The school's faculty are described as principally trained in English-speaking countries, bringing international pedagogical perspectives to their teaching.

The All-Girls Advantage

Seisen International School has been an all-girls institution from Grade 1 since its founding, making it one of the few all-girls international schools in Tokyo. Research consistently shows that all-girls environments can foster greater confidence, leadership, and academic risk-taking among female students — and Seisen's culture reflects this. Girls are encouraged to lead, compete, create, and serve without the social dynamics that can sometimes constrain mixed-gender environments.

Sports: Competitive and Inclusive

Seisen fields competitive teams in a wide range of sports, participating in the Kanto Plain Association of Secondary Schools (KPAS) and Far East competitions. Sports offered include:

• Basketball — competitive inter-school league
• Soccer — Kanto league participation
• Track & Field — regional championships
• Cross Country — long-distance running
• Tennis — singles and doubles
• Volleyball — competitive team
• Cheerleading — recreational, performance-focused

The school's outdoor field and tennis courts, along with its indoor gymnasium, provide the infrastructure for year-round athletic activity.

Arts: Expression and Excellence

The arts are a cornerstone of Seisen's extracurricular life. Students can participate in:

• Orchestra — strings and wind instruments
• Choir — vocal performance including mass and concerts
• Bands — classical and popular music
• Drama — annual productions in the dedicated drama room
• Visual Arts — painting, sculpture, and mixed media
• Pottery — ceramics and clay work
• Textiles/Fashion — fabric design and garment construction

Service and Leadership

Consistent with the school's Catholic ethos, service to others is a central pillar of student life. The Social Justice programme engages students in local and international community projects. Student Leadership structures give girls meaningful roles in school governance. The school also hosts TEDx Seisen events, where students develop and deliver talks on topics of personal significance.

Academic Enrichment

• Model United Nations — English-language international conference simulation
• Debate & Speech Team — competitive English oratory
• Science Competition Team — international olympiad preparation
• Math Club — Kangaroo and other competitions
• Seisen Post — student newspaper
• Yearbook — annual publication

The House System

Seisen's four-house system creates vertical community bonds across year groups, with students from kindergarten through Grade 12 sharing a house identity. Inter-house competitions in sports, arts, and academics build school spirit and teach students to collaborate across age differences — a microcosm of the diverse, intergenerational communities they will inhabit as adults.

Who Seisen Is For

Seisen International School is primarily designed for expatriate families and internationally mobile students who require an English-medium, internationally accredited education in Tokyo. The school is not a MEXT 一条校 (Article 1 school), meaning it operates outside the Japanese national curriculum framework — a deliberate choice that allows it to maintain its IB Continuum programme without compromise.

The school's application materials note that Seisen "exists primarily" as a day school for students whose families are based in Tokyo, and that it may not be a viable option for families who cannot commit to the Tokyo area for the duration of their child's enrolment.

The Application Process

Admissions at Seisen involve several components:

1. Online Application — submitted through the school's admissions portal
2. Academic Assessments — all applicants in Grades 1-11 sit English and Mathematics tests to assess grade-level readiness
3. School Records — transcripts from the most recent two years of schooling are required
4. Interview — for Grades 1-11, an interview with school leadership may follow the assessment; kindergarten applicants participate in a guidance-focused session
5. Family English Proficiency — at least one parent must be able to communicate with the school in English, as all instruction and school communication is conducted in English

What Seisen Looks For

Beyond academic readiness, Seisen seeks students and families who align with its core values: Collaboration, Problem-solving, Empathy, Respect, and Open-mindedness. The school's Catholic ethos — while welcoming to students of all faiths — requires families to respect and engage with the school's values framework.

Fees and Financial Planning

Tuition ranges from approximately ¥1,600,000 per year (kindergarten half-day) to ¥2,700,000 per year (middle and high school). A one-time, non-refundable enrollment fee of ¥300,000 is payable upon acceptance. The school offers a Corporate Contribution Plan for families whose employers sponsor international school fees — a common arrangement for expatriate families in Tokyo.

Practical Considerations

The school operates on an August-to-June academic year (two semesters), aligned with the North American school calendar rather than the Japanese one. This is an important consideration for families transitioning from Japanese schools or planning future moves. A school bus service is available, and the campus is approximately 10 minutes' walk from Yoga Station on the Tokyu Den-en-toshi Line.

Admissions Overview

Seisen International School operates a rolling admissions process with no fixed deadlines, though early application is strongly advised due to limited space. The school serves approximately 700 students across 40+ nationalities, with class sizes capped at 20-25 students. This selective environment, combined with the school's mission-driven approach, makes admissions competitive and holistic.

Application Process

The admissions journey follows a structured eight-step pathway:

Step 1: Initial Inquiry and Campus Visit

Families begin by submitting an online inquiry. The admissions office contacts them to discuss the student's background and arrange a campus tour. This initial consultation helps both parties assess potential fit before formal application.

Step 2: Application Submission

Applicants complete an online application form and submit required documents, including report cards from the past two years. Official transcripts are not initially required, though the school may request additional records during review. An application fee of ¥30,000 (non-refundable) is due at submission.

Step 3: Principal Review

The appropriate division principal (Kindergarten, Elementary, Middle, or High School) reviews each application for program fit, assessing language readiness, support requirements, and alignment with the school's Catholic mission. The principal then contacts the family to discuss next steps.

Step 4: Assessments

For Grades 1-11: All applicants must complete standardized assessments in English and Mathematics. These may be external tests (MAP or SAT) or school-administered evaluations scheduled by Seisen. There is no single comprehensive "entrance exam"—assessment focuses specifically on these two subject areas.

For Kindergarten (ages 3-5): Individual interviews and age-appropriate assessments replace formal testing.

Step 5: Family Interviews

Based on assessment results, the school schedules interviews with the student and family. The relevant principal conducts these meetings to discuss the student's goals, readiness for the program, and family support of Seisen's mission. These conversations are mandatory for all applicants and serve as a critical evaluation component.

Step 6: Admissions Decision

The admissions committee makes decisions based on academic readiness, mission alignment, and available space. Successful applicants receive an enrollment package with acceptance details.

Step 7-8: Enrollment and Onboarding

Families accept offers by submitting signed enrollment forms along with substantial fees:

• Registration Fee: ¥300,000 (non-refundable)
• Land & Building Development Fee: ¥700,000 (non-refundable)

New students complete health forms and other onboarding requirements before the term begins.

Selection Criteria and Competitiveness

Academic Readiness

Seisen seeks students who can thrive in a challenging U.S.-based curriculum with IB Middle Years Programme and Diploma Programme in upper grades. Assessment scores in English and Mathematics serve as primary indicators of academic preparedness.

English Proficiency

English fluency is non-negotiable. All instruction and school communication occur in English, and at least one parent must speak and read English proficiently. While EAL (English as an Additional Language) support exists using the WIDA framework, students need a solid English foundation from day one.

Mission Alignment

As a Catholic school founded by the Handmaids of the Sacred Heart, Seisen emphasizes forming "men and women for others." The school looks for families who support its values of service, compassion, and global citizenship. While students of all faiths are welcome, all participate in religious and cultural studies.

Priority Categories

Seisen operates on a space-availability basis with priority given to:

• Siblings of current students
• Children of alumni
• Children of faculty
• Returning students
• Catholic families

However, priority status does not guarantee acceptance—all applicants must demonstrate academic fit and mission alignment.

Target Demographic

Seisen explicitly serves expatriate families for whom local Japanese schools are not viable due to language barriers. The admissions policy states the school exists "primarily to meet the needs of expatriate families... for whom, due to lack of local language, other schools may not be a viable option."

Waitlist Policies

When spaces are limited, qualified applicants may be placed on a waitlist. The school evaluates each candidate individually—even priority category applicants must meet curriculum requirements and mission fit. No automatic acceptance exists for any group.

Key Considerations

Gender Restrictions

Seisen admits boys only in Kindergarten. From Grade 1 onwards, enrollment is girls-only. This all-girls environment focuses specifically on girls' education and empowerment.

Visa Requirements

Seisen is a non-boarding day school and does not sponsor student visas. Families must secure appropriate residency status independently before applying.

Japanese Compulsory Education

Seisen is not a Japanese "Article 1 school." Japanese nationals attending Seisen do not fulfill government compulsory education requirements for Grades 1-9 unless they simultaneously attend a Japanese school.

Assessment Timeline

The school does not publish specific testing dates. Assessments are scheduled individually after application review, typically within a few weeks of submission.

First Tuition Payment

The first tuition installment is due by mid-June for the coming academic year, indicating families should complete applications well before summer for fall enrollment.

Application Tips

Apply Early: With rolling admissions and limited spots (20-25 per class), early applications have better placement chances.

Demonstrate English Proficiency: Submit evidence of strong English skills through report cards, standardized test scores, or teacher recommendations.

Understand the Mission: Familiarize yourself with Seisen's Catholic values and service orientation. Be prepared to discuss how your family aligns with these principles during interviews.

Prepare for Assessments: Grades 1-11 applicants should review English language arts and mathematics at their grade level. Practice reading comprehension, writing, and problem-solving.

Tour the Campus: The campus visit provides valuable insight into the school's culture and allows you to ask specific questions about your child's fit.

Required Documents Checklist

• Completed online application form
• Report cards from the past two years
• Application fee payment (¥30,000)
• Birth certificate (at enrollment)
• Immunization records (at enrollment)
• Passport/residency documentation
• Any existing standardized test scores (MAP, SAT, etc.)

What Sets Seisen Apart

Seisen's admissions process emphasizes holistic evaluation over pure academics. The mandatory family interviews and mission-alignment focus distinguish it from schools with purely test-based admissions. The school seeks students who will contribute to its close-knit, service-oriented community of global citizens—not just high achievers who happen to need an English-language school in Tokyo.

With approximately 700 students from 40+ countries and a 98% IB Diploma pass rate (well above the global 80% average), Seisen maintains selective standards while fostering an inclusive, supportive environment. The combination of small classes, individualized attention, and values-based education creates a distinctive admissions profile for families seeking more than academic rigor alone.

University Placement Overview

Seisen International School demonstrates strong university placement outcomes, with graduates attending prestigious institutions worldwide. From 2020-2024, students were accepted to 99 different universities across multiple continents, reflecting the school's global orientation and rigorous academic preparation.

IB Diploma Performance

Examination Results

Seisen's IB Diploma Programme students consistently outperform global averages:

Recent Performance:

• Class of 2025: Average score of 35 points (vs. world average ~30.5)
• Classes of 2023-24: Average score of 34 points
• Pass Rate: 97-98% annually (compared to worldwide ~80%)

High Achievers:

• 2025: 8 students scored 40+ points
• 2024: 4 students scored 40+ points
• 2023: 5 students scored 40+ points

These metrics place Seisen well above international benchmarks, demonstrating the effectiveness of its academic program. The school does not rank students by GPA or class rank, focusing instead on holistic development and IB assessment criteria.

Graduation Rate

While not explicitly published, the school's near-perfect IB pass rate (98%) suggests a graduation rate approaching 100%. Nearly all students who complete Grade 12 successfully earn their IB Diploma and proceed to tertiary education.

University Destinations

Geographic Distribution

Seisen graduates pursue higher education globally, with recent data showing diverse geographic preferences:

Class of 2024 Destinations:

• Asia/Japan: 39%
• US/Canada: 35%
• UK/Europe: 14%
• Other regions: ~12%

This distribution reflects the school's international student body (representing 40-42 nationalities) and the global mobility of expatriate families.

Notable Acceptances

While Seisen does not publish comprehensive lists of university acceptances, third-party sources indicate students have been accepted to selective institutions including:

• Amherst College (USA)
• Carnegie Mellon University (USA)
• University College London (UK)
• University of Edinburgh (UK)
• Chinese University of Hong Kong
• Chulalongkorn University (Thailand)
• Yonsei University (South Korea)
• University of Manchester (UK)

Higher Education Participation

Approximately 70-95% of graduates pursue higher education immediately after graduation, meaning nearly all students continue to university or equivalent programs. This high continuation rate reflects both the academic preparation and university-focused culture at Seisen.

College Counseling & Support

Dedicated Staff

Seisen maintains a structured college counseling program with dedicated personnel:

• Academic & Higher Education Advisor (Ms. Awing Lui): Guides students through university selection and application processes
• IB Coordinator (Ms. Veronique Maekawa): Supports course selection and IB requirements for optimal university readiness

Support Services

Application Guidance:

• Students are encouraged to apply to a broad range of universities (typically up to 10 applications)
• Counselors help students identify institutions matching their academic profile, interests, and goals
• Integration of college preparation throughout the curriculum

Alumni Mentoring: The Seisen Former Students' Association facilitates alumni-student connections, allowing current students to consult with graduates about:

• University selection and application strategies
• Major/program choices
• Career pathways
• Student life at various institutions

Standardized Testing: The school supports college preparation through:

• SAT and PSAT/NMSQT administration
• College advising classes integrated into the curriculum
• MAP (Measures of Academic Progress) assessments

Academic Preparation

Curriculum Framework

Seisen's college-prep approach centers on the International Baccalaureate:

• Middle Years Programme (Grades 9-10): Builds foundational skills in research, critical thinking, and interdisciplinary learning
• Diploma Programme (Grades 11-12): Provides university-level academic rigor across six subject groups plus Theory of Knowledge, Extended Essay, and CAS (Creativity, Activity, Service)

Additional Assessments

Beyond IB exams, students have access to:

• SAT standardized testing for US university applications
• Japanese Kanji assessments (relevant for students applying to Japanese universities)
• Regular MAP testing to track academic growth

Scholarship Achievements

While Seisen does not publish comprehensive data on university scholarships earned by graduates, anecdotal evidence suggests students have received merit-based awards including Dean's Scholarships at various institutions. The alumni association also provides scholarships to current Seisen students, though these support attendance at Seisen rather than university costs.

The school's annual Seisen Spirit Award recognizes one graduating senior who exemplifies school values, though this is primarily honorific rather than a substantial financial award.

Strengths of the Placement Program

Global Network

With over 5,000 alumni living in countries worldwide (95% outside Japan), Seisen graduates benefit from an extensive international network that can provide insights and connections for university selection and career development.

Small Class Sizes

With maximum class sizes of 20-25 students, counselors can provide individualized attention to each student's university planning, ensuring personalized guidance throughout the application process.

Holistic Development

Seisen's emphasis on service learning, leadership, and extracurricular engagement (sports, arts, Model UN, debate, etc.) helps students build competitive university applications beyond academics alone.

English Language Advantage

As a fully English-medium school following US-based curricula and IB standards, Seisen students are well-prepared for English-language university programs worldwide, eliminating language barriers common for students from Japanese schools.

Considerations for Families

Families evaluating Seisen's university placement should note:

• No class ranking: The school does not provide class rank, which some universities request (though IB scores serve this function)
• Focus on fit: Counseling emphasizes finding universities aligned with student interests rather than prestige-focused placement
• Global orientation: Students should be prepared for university applications across multiple countries and systems
• Self-direction required: While support is strong, the IB Diploma demands significant independent research and time management skills that translate to university success

Conclusion

Seisen International School's university placement outcomes reflect its rigorous IB-focused curriculum and dedicated counseling support. With consistently high IB scores, near-universal university continuation, and acceptances to competitive institutions worldwide, the school successfully prepares students for global higher education. The combination of strong academics, personalized counseling, and an international alumni network positions graduates well for diverse university pathways.

Overview

Seisen International School cultivates a distinctive culture rooted in Catholic values and global citizenship. With approximately 700 students representing 40-42 nationalities, the school creates an internationally diverse learning environment that emphasizes compassion, collaboration, and service. The educational philosophy centers on forming "competent and compassionate players in our global society" while maintaining close-knit community connections through small class sizes and extensive family engagement.

Student Demographics & Diversity

International Composition

The student body reflects remarkable global diversity:

• Total enrollment: ~700 students across Kindergarten through Grade 12
• Nationalities represented: 40-42 countries
• Largest demographic: Japanese nationals comprise approximately 42% of enrollment
• Gender composition: Girls-only from Grades 1-12; co-educational Kindergarten only

This international mix creates a naturally multicultural environment where students gain exposure to diverse perspectives, languages, and cultural traditions. The alumni network extends this global reach, with over 5,000 former students living in 95 countries worldwide.

Language Environment

English serves as the exclusive language of instruction and communication. While the school teaches Japanese as a second language and offers Kanji testing, it operates primarily for English-speaking expatriate families. At least one parent must be fluent in English to support their child's education and communicate effectively with the school.

Educational Philosophy & Values

Catholic Mission

Founded by the Handmaids of the Sacred Heart, Seisen's mission emphasizes:

• Service orientation: Developing "men and women for others" through community engagement
• Shared responsibility: Fostering interdependence and collaborative problem-solving
• Compassionate leadership: Nurturing creativity, empathy, and respect
• Spiritual development: Regular religious studies and cultural exploration for all students

While Catholic in foundation, the school welcomes families of all faiths who respect and support its core values. All students participate in religious and cultural studies as part of the curriculum.

Learning Environment

The school maintains intimate class sizes capped at 20-25 students, enabling:

• Close faculty-student relationships
• Individualized attention and support
• Collaborative, discussion-based learning
• Strong sense of belonging and community

From the application process onward, Seisen fosters a "culture of collaboration, problem-solving, empathy, respect and open-mindedness," expecting families to share these foundational values.

Community Engagement & Events

Seisen Parents' Association (SPA)

The SPA serves as the backbone of family engagement, acting as liaison between parents and school leadership while organizing numerous community-building activities:

Regular Events:

• Welcome coffees for new families
• Staff appreciation luncheons
• Senior farewell dinners
• Spring community luncheons
• Grade-level social gatherings

Support Programs:

• Parent Buddy Program: Each new family is paired with a veteran family in the same grade level, providing mentorship and practical support—especially valuable for non-Japanese speakers navigating life in Tokyo
• Communication channels between parent body and administration
• Volunteer coordination for school events

Festival of Nations

The school's flagship annual event, the Festival of Nations functions as both celebration and fundraiser:

• International fair featuring cultural booths from represented countries
• Organized by SPA with alumni volunteer participation
• 100% of proceeds directly support student experiences, including travel programs, arts/sports activities, and student gifts
• Major community-wide gathering strengthening bonds across grade levels

Alumni Engagement

The Seisen Former Students' Association (SFSA) maintains active connections:

• Alumni Mentoring Program: Current students consult former students about university selection, majors, and career paths
• Annual alumni booth at Festival of Nations
• Reunion organization and networking events
• Scholarship fundraising for current students
• Seisen Spirit Award: Annual recognition (since 2012) for graduating seniors exemplifying school values

Cultural & Religious Celebrations

The school calendar includes regular community events reflecting its Catholic identity and international character:

• St. Raphaela Day celebrations
• Christmas concerts and performances
• Multicultural observances honoring diverse traditions
• Service projects and community outreach initiatives

Extracurricular Activities

Athletics

Seisen offers competitive sports programs through the Kanto Plain Association, competing against other international and Department of Defense schools:

• Basketball
• Cross-country
• Soccer
• Tennis
• Track & field
• Volleyball

Performing Arts

• Choir and show choir
• Drama productions and school plays
• Instrumental ensembles
• Pottery and visual arts

Academic & Leadership Activities

• Debate Team
• Model United Nations
• Science Olympiad/competition teams
• Student newspaper and yearbook
• Speech and public speaking
• Student-initiated clubs (students are encouraged to create their own organizations, cultivating leadership skills)

Language & Cultural Programs

Beyond English instruction, students access:

• French language courses
• Japanese language instruction
• Spanish language courses
• Religious and cultural exploration classes

Student Well-being & Support

Counseling Services

A dedicated three-counselor team serves different divisions (K-5, 6-8, 9-12), providing:

• Social-emotional learning (SEL) curriculum lessons
• Individual counseling on stress management, self-esteem, and coping strategies
• Crisis support and intervention
• Mental health resources and referrals

Learning Support

Specialized staff offer tailored assistance:

• Learning Support Specialist: Provides in-class (push-in) or small-group support for students with learning differences
• Individual Education Plans developed collaboratively
• Coordination among counselors, nurses, and classroom teachers
• Support available from Kindergarten Stage 2 through High School

English as an Additional Language (EAL)

For non-native English speakers:

• WIDA framework-based instruction
• Daily support sessions improving literacy skills
• Scaffolded integration into mainstream classes
• Progress monitoring and family communication

Safeguarding

Formal child protection infrastructure includes:

• Designated Child Protection Officer
• Mandatory reporting protocols
• Clear safeguarding policies and procedures
• Staff training on child welfare

Community Characteristics

Who Thrives at Seisen

Students who excel typically:

• Are comfortable in English-language environments
• Appreciate small, close-knit communities
• Value service and faith-based education (or respect these traditions)
• Adapt well to collaborative, discussion-based learning
• Embrace international perspectives and diversity

Families that fit well:

• Support the school's Catholic mission or respect its values
• Have strong English communication abilities
• Seek continuity in K-12 education during Tokyo assignment
• Value community engagement and active participation
• Can meet financial commitments (approximately ¥2.65-2.7 million annually plus fees)

Potential Challenges

The school may not suit:

• Families seeking Japanese government-accredited schooling (compulsory education requirements)
• Those desiring purely secular education
• Families with boys beyond Kindergarten level
• Students requiring extensive English language remediation
• Those seeking significant financial aid or sibling discounts

Summary

Seisen International School's culture distinctively blends Catholic values with global citizenship, creating a supportive, service-oriented community. The emphasis on small classes, extensive parent involvement through SPA, robust student support services, and celebration of diversity positions the school as a nurturing environment for internationally-minded families committed to values-based education. The multi-faceted community wellbeing approach—encompassing academic rigor, spiritual development, and social-emotional support—reflects the school's holistic mission to develop compassionate global leaders.

Total Cost of Attendance

Seisen International School's total cost varies significantly between the first year of enrollment and subsequent years due to substantial one-time fees. Families should budget carefully, as the school offers limited financial aid beyond corporate-sponsored programs.

First-Year Costs (2026-27)

New students face three mandatory one-time fees totaling ¥1,030,000:

• Application Fee: ¥30,000 (non-refundable, due at application)
• Registration Fee: ¥300,000 (non-refundable, due at acceptance)
• Land & Building Development Fee: ¥700,000 (non-refundable, due at acceptance)

Combined with annual tuition and the building maintenance fee, first-year costs are:

Ongoing Annual Costs

From Year 2 onward, families pay only tuition plus the annual building maintenance fee:

• Kindergarten (Half-Day): ¥1,750,000/year
• Kindergarten (Full-Day): ¥2,650,000/year
• Elementary (Gr 1-5): ¥2,800,000/year
• Middle & High School (Gr 6-12): ¥2,850,000/year

Additional Required Expenses

Beyond base tuition, families should budget for:

Technology:

• Students in Grades 3-5 must purchase an iPad through the school (cost varies by model but typically several hundred dollars)

IB Examination Fees:

• Grade 12 students pay ¥20,000 per IB subject (typically 6 subjects = ¥120,000)

Graduation Fee:

• Grade 12: ¥30,000 (covers ceremony regalia)

Curricular Trips:

• Multiple grade levels have mandatory overnight trips with separate fees. Recent examples include:
  • Grade 6: Nikko
  • Grade 11: Hakuba or Canyons
  • Grade 12: Hokkaido
• Trip costs are billed separately when destinations are finalized (amounts vary by program)

Optional Costs

School Bus Transportation:

• One-way annual pass: ¥310,000
• Round-trip annual pass: ¥420,000
• Fees may be prorated quarterly if joining mid-year

School Lunch:

• Available through on-site provider (Cezar's Kitchen)
• Families contract and pay the vendor directly (costs not specified by school)

13-Year Total Cost Estimate

For a student attending Seisen from Kindergarten (full-day) through Grade 12 graduation:

Base costs only (tuition + maintenance + one-time fees):

• Year 1 (K): ¥3,680,000
• Years 2-3 (K): ¥2,650,000 × 2 = ¥5,300,000
• Years 4-8 (Gr 1-5): ¥2,800,000 × 5 = ¥14,000,000
• Years 9-11 (Gr 6-8): ¥2,850,000 × 3 = ¥8,550,000
• Years 12-14 (Gr 9-11): ¥2,850,000 × 3 = ¥8,550,000
• Year 14 (Gr 12): ¥2,850,000 + ¥120,000 (IB fees) + ¥30,000 (graduation) = ¥3,000,000

Total 13-year cost: ¥43,080,000 (approximately $287,000 USD at ¥150/$1)

This excludes:

• Transportation (bus: ~¥5.46M over 13 years if using round-trip)
• School meals (estimated ¥500-800/day × ~180 days = ¥90,000-144,000/year)
• iPad purchases
• Curricular trip fees
• Personal supplies and uniforms

A realistic all-inclusive 13-year estimate approaches ¥50-55 million (~$333,000-367,000 USD).

Financial Aid & Scholarships

Seisen offers extremely limited financial assistance:

Corporate Contribution Plan:

• The only formal tuition support program
• Available exclusively for international companies sponsoring expatriate employees
• Companies negotiate directly with SIS's Business Office
• Eligibility criteria and discount percentages are not publicly disclosed
• Families must have corporate backing to access this program

Alumni Association Support:

• The Seisen Former Students' Association (SFSA) provides small scholarships to current students
• Criteria and amounts are not published
• The annual "Seisen Spirit Award" honors one graduating senior (primarily honorific)

What Seisen Does NOT Offer:

• Need-based financial aid for individual families
• Merit scholarships for academic achievement
• Sibling discounts or multi-child tuition reductions
• Fee waivers for hardship cases

Payment Terms & Refund Policy

Payment Schedule:

• First tuition installment: Due mid-June (before school year starts)
• Optional second installment: Due January (for tuition and bus fees only)

Refund Policy:

• Tuition and bus fees: Refundable on prorated quarterly basis with advance written notice
• Registration, development, and maintenance fees: Non-refundable once student attends any part of the year
• Families withdrawing mid-year receive partial tuition refunds based on quarters remaining

Cost Comparison

Seisen's fees fall in the middle range for Tokyo international schools:

Lower Cost:

• Columbia International School (Canadian curriculum): ~¥1,770,000/year

Similar Range:

• Malvern College Tokyo: ¥2,690,000-2,910,000/year
• Tokyo International School: ¥3,000,000-3,300,000/year

Higher Cost:

• Rugby School Japan (boarding): ¥5,000,000-6,000,000/year

Seisen's pricing reflects its strong IB program and extensive facilities while remaining more accessible than elite boarding schools.

Insurance Coverage

All students receive basic accident insurance at no additional charge:

• Medical expenses: Up to ¥1,000,000
• Death/dismemberment: Up to ¥3,000,000

Cost Management Strategies

Given the limited aid options, families should:

1. Confirm corporate support before applying if employer sponsors education
2. Budget for the full 13-year commitment if enrolling younger students
3. Factor in currency fluctuation risk for non-yen earners
4. Plan for Grade 12 exam/graduation costs in advance
5. Consider transportation carefully (bus fees add 15-18% to annual costs)

Bottom Line

Seisen International School requires significant financial commitment with minimal aid available. The ¥1.03M in one-time fees creates a substantial first-year hurdle, and ongoing costs of ¥2.8-2.85M annually place it firmly in the mid-to-upper tier of Tokyo international schools. Families without corporate sponsorship should be prepared to cover full costs independently, as need-based aid programs do not exist.

Who Is This School Best For?

Seisen International School serves a specific demographic within Tokyo's international school landscape. Understanding who thrives here—and who might face challenges—helps families make informed decisions about this all-girls Catholic institution.

Ideal Student Profile

Academic Readiness

Seisen is designed for academically motivated students who can thrive in a rigorous English-language curriculum. The school's IB Diploma results speak to its academic expectations: the Class of 2025 averaged 35 points (versus the global average of ~30.5), with 8 students scoring 40+ points. Students need solid English proficiency from the start, as all instruction occurs in English and standardized testing (MAP, SAT) is integral to the program.

The school explicitly states it exists "primarily to meet the needs of expatriate families… for whom, due to lack of local language, other schools may not be viable." Applicants in Grades 1–11 must complete standardized English and Mathematics assessments, and the admissions process evaluates whether students can succeed in this challenging environment without extensive remediation.

Gender Considerations

Seisen admits girls from Grade 1 through Grade 12, with co-educational kindergarten (ages 3–5) being the only exception. Families with daughters who flourish in single-gender educational settings will find Seisen particularly appealing. The all-girls structure from elementary through high school creates an environment focused specifically on girls' academic and leadership development.

Families with sons beyond kindergarten age will need to look elsewhere, as no boys' program exists past the early childhood level.

Values Alignment

Seisen's Catholic mission permeates school life. While the school welcomes families of all faiths and backgrounds, students participate in religious and cultural exploration courses, attend masses, and engage with service-oriented values rooted in the phrase "men and women for others."

The ideal student and family respect (if not share) these values. The admissions process specifically looks for families who support the school's "identified values as a Catholic school in the tradition of the Handmaids of the Sacred Heart." Families seeking a purely secular environment may find the religious component more prominent than desired.

Ideal Family Profile

Expatriate & International Families

Seisen's primary constituency consists of globally mobile, English-speaking families. The student body represents approximately 40–42 nationalities, with Japanese nationals comprising about 42% of enrollment and the remainder from diverse international backgrounds. The school culture assumes frequent transitions: parents organize "Buddy" programs to help newcomers, and the curriculum accommodates students who may arrive mid-year or depart before graduation.

At least one parent must be fluent in English, as all school communications, the parent portal, and family engagement occur in English. Families without strong English capability will struggle to support their children's education and participate in the community.

Corporate-Sponsored Families

With annual tuition ranging from ¥2,500,000 (full-day kindergarten) to ¥2,700,000 (high school), plus a ¥700,000 one-time development fee and ¥300,000 registration fee, Seisen represents a significant financial commitment. The school offers a Corporate Contribution Plan for international companies supporting expatriate employees' education expenses, suggesting many families receive employer assistance.

Families should confirm corporate education benefits before applying, as Seisen does not offer need-based financial aid programs or sibling discounts publicly.

Engaged & Supportive Parents

The Seisen Parents' Association (SPA) plays a central role in school life, organizing welcome coffees, cultural events, and the major annual Festival of Nations fundraiser. The school expects families to participate actively in this community. Parents who appreciate close-knit school environments and can commit time to community-building will integrate well.

Small class sizes (typically 20–25 students) mean parents often develop close relationships with teachers and other families. This intimacy appeals to those seeking personal attention but may feel constraining to families preferring more anonymity.

Students Who May Struggle

Japanese Nationals Seeking Local Credentials

While 42% of Seisen students hold Japanese nationality, families must understand that Seisen is not a Japanese Article 1 school. Japanese citizens attending Seisen from Grade 1 to Grade 9 do not fulfill Japan's compulsory education requirements unless they also attend Japanese school.

The school teaches Japanese as a second language and offers Kanji testing, but it cannot substitute for Japanese government schooling. Families planning to remain in Japan long-term and wanting their children to integrate into the Japanese education system should consider this carefully.

Students Requiring Extensive Support

Seisen provides Learning Support specialists and EAL (English as Additional Language) services using the WIDA framework. However, the school's resources are finite. Students requiring intensive special education services, extensive English remediation, or highly specialized accommodations may find the support insufficient.

The admissions process includes a review of support needs, and the school may determine that some applicants would be better served elsewhere. Families should be transparent about learning differences during the application process.

Families Seeking Financial Aid

Unlike many international schools, Seisen does not publicize need-based financial aid programs. Beyond the corporate contribution plan (available only through employer sponsorship) and small alumni scholarships for current students, there are no bursaries, sibling discounts, or sliding-scale tuition options mentioned on the school's website.

Families requiring substantial financial assistance to afford the ¥2.7+ million annual commitment (plus development fees, bus, trips, etc.) should inquire directly but should not expect extensive aid availability.

The Best Fit: A Summary

Seisen International School excels at serving:

• Daughters of expatriate families relocating to Tokyo for 2–10+ years
• English-fluent households comfortable with U.S./IB curricula
• Families appreciating Catholic values and service-oriented education (regardless of their own faith tradition)
• Academically capable students ready for rigorous coursework leading to strong IB results
• Corporate-sponsored families with education benefits or means to pay full tuition
• Parents seeking community engagement in a diverse, intimate school environment (700 students total)

The school is less suitable for:

• Families with sons beyond kindergarten age
• Japanese nationals prioritizing local education credentials
• Families requiring extensive financial aid or tuition discounts
• Students needing intensive special education support
• Families preferring secular schooling without religious components
• Parents unable to communicate fluently in English

Location & Lifestyle Considerations

Seisen's campus in Setagaya, Tokyo, serves day students only—the school does not offer boarding or sponsor student visas. Families must secure appropriate residency status independently.

Optional school bus service costs ¥310,000–¥420,000 annually, suggesting many families live at some distance from campus. The location works well for expatriate families in Tokyo's international residential areas but requires transportation planning.

University Outcomes: A Performance Indicator

For families evaluating academic fit, Seisen's university placement provides useful context. From 2020–2024, graduates matriculated to 99 different institutions worldwide, with roughly 39% attending universities in Japan/Asia, 35% in North America, and 14% in the UK/Europe. The 97–98% IB pass rate (well above the global 80% average) indicates that students who complete the program are well-prepared for tertiary education.

Families seeking a school that balances academic rigor with holistic development, maintains strong university outcomes, and provides continuity for mobile international families will find Seisen aligns well with those priorities—provided they meet the gender, language, values, and financial criteria outlined above.