International School · Day School · Through School (K-12)

Chiang Mai International School
Chiang Mai, Thailand
Last updated: Jun 20, 2026
Chiang Mai International School (CMIS) is a non-profit, English-medium international school founded in 1954, making it one of the oldest international schools in Chiang Mai, Thailand. Serving over 500 students from 30+ nationalities, CMIS offers a US-aligned curriculum with Advanced Placement (AP) courses at the high school level. The school is accredited by WASC and is a member of EARCOS, reflecting its commitment to high academic standards. Rooted in Christian values, CMIS fosters a caring community that emphasizes academics, arts, athletics, and community service. Its central Chiang Mai campus features modern facilities including a gymnasium, auditorium, learning center, and cafeteria.
- Curriculum
- US Curriculum / AP
- Annual Tuition
- THB 341,700.00 - THB 580,200.00(2026-2027)≈ $10,185 - $17,293
- Nationalities
- 30+
Overview
Chiang Mai International School is an international US Curriculum, Advanced Placement (AP) school for ages 3–18 in Chiang Mai, Thailand. Founded in 1954. The language of instruction is English, with EAL support available. Annual tuition: THB 341,7...
At a Glance
American curriculum with AP courses in high school, accredited by WASC and serving as Chiang Mai's oldest international school since 1954
Students from 30+ countries with enrollment of 500+ students, creating a globally diverse community maintained by approximately 70 faculty
Competitive admissions requiring grade-level English proficiency verified through entrance assessments, interviews, and academic/behavioral evaluations
Annual tuition ranges THB 341,700–580,200 (2026-27) plus THB 100,000 enrollment fee and additional facility/activity fees
Tuition & Fees
Annual Tuition
THB 341,700.00 - THB 580,200.00(2026-2027)≈ $10,185 - $17,293
Application Fee
THB 100,000.00≈ $2,981
Deposit
THB 5,000.00≈ $149
Est. First Year Total
THB 690,200.00≈ $20,572
Tuition by Grade
| Grade | Annual Tuition | Application Fee | Deposit |
|---|---|---|---|
| Grades 9–12 | THB 580,200.00≈ $17,293 | THB 5,000.00≈ $149 | THB 5,000.00≈ $149 |
Additional Fees
Enrolment Fee
THB 100,000.00≈ $2,981
Approximate values based on ECB reference rates (Jul 13 – 17, 2026). Actual amounts may vary.
Curriculum & Academics
Languages of Instruction
Languages of Instruction
Compulsory / Optional
Accreditations & Memberships
2 accreditationsAdmissions
Requirements
Preschool, Middle & High School (Grades 6–12), Elementary (KG–Grade 5)
English Requirement: Advanced English
Application Fee: 5,000
School Life
- Term system
- Semester
- Lunch
- cafeteria
Support & Wellbeing
Co-curricular Activities
18 activitiesTeam Sports(3)
Grades: Primary · Secondary
Individual Sports(3)
Grades: Primary · Secondary
Music(1)
Drama & Theatre(1)
Academic Clubs(1)
Grades: Secondary
Service & Leadership(2)
Grades: Secondary
School-specific(7)
Grades: Primary · Secondary
Facilities
10 facilitiesSports & Athletics(1)
Academic Facilities(1)
Arts & Performance(1)
Outdoor Spaces(1)
Wellbeing(1)
School-specific(5)
Campuses
Main Campus
Chiang Mai International School - Main Campus
13 Chetupon Road, Wat Ket, Muang, Chiang Mai 50000, Thailand
Schoozy Insights
Seven Decades of International Education in Chiang Mai
Founded in 1954 by the Church of Christ in Thailand, CMIS is one of the oldest international schools in northern Thailand, evolving from missionary roots to a modern accredited institution.
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A Legacy Built Over Seven Decades
Chiang Mai International School (CMIS) holds the distinction of being one of the oldest international schools in Chiang Mai, Thailand, having been established in 1954 by the Church of Christ in Thailand. Originally founded to serve the children of missionaries and expatriates, the school has grown steadily over the decades into a fully accredited international institution.
Campus Development Timeline
The physical campus reflects this long history of growth:
- 1954 – School founded by the Church of Christ in Thailand
- 1958 – Preschool building constructed
- 1988 – Auditorium built (renovated in 2017)
- 1990 – Secondary (High School) building constructed
- 1997 – Elementary building added
- 2017 – Covered outdoor court completed
- 2019 – New Learning Center and Cafeteria opened
- 2021 – Secondary building fully renovated
- 2022 – Secondary building expanded
From Missionary School to International Institution
While CMIS was founded with a Christian mission, it has evolved to prioritize international education above denominational identity. Today, the school serves over 500 students from more than 30 nationalities, offering a US-aligned curriculum with Advanced Placement (AP) courses at the high school level. The school retains its Christian heritage through spiritual life programs and community values, but its primary identity is that of a rigorous, internationally-focused academic institution.
Accreditation and Recognition
CMIS is accredited by the Western Association of Schools and Colleges (WASC) and is a member of EARCOS (East Asia Regional Council of Schools), placing it among the recognized international schools in the Asia-Pacific region. These accreditations affirm the school's commitment to maintaining high educational standards consistent with US and international benchmarks.
The school's location at 13 Chetupon Road in the Wat Ket district places it in a historically significant part of Chiang Mai, approximately 15 minutes from the international airport, making it accessible to the city's expatriate community.
US-Aligned Curriculum with AP Pathway and Active Learning Focus
CMIS offers a rigorous English-medium, US-aligned curriculum culminating in Advanced Placement courses, with an emphasis on active learning and standards-based assessment.
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Academic Culture at CMIS
Chiang Mai International School delivers an English-medium, US-aligned curriculum from Preschool through Grade 12. The academic program is designed to prepare students for university admission in the United States and internationally, with a particular emphasis on rigorous coursework and active, inquiry-based learning.
Curriculum Structure
The school follows a standards-based US curriculum across all grade levels:
- Preschool (Ages 3–4): Early childhood education with a nurturing, play-based approach
- Elementary (KG–Grade 5): Core subjects aligned to US Common Core-style standards
- Middle School (Grades 6–8): Departmentalized instruction with increasing academic rigor
- High School (Grades 9–12): Full US high school curriculum with Advanced Placement (AP) course offerings
The AP program at the high school level provides students with the opportunity to earn college credit and demonstrates the school's commitment to university preparation.
Language of Instruction
All academic instruction is conducted in English. Students also have access to world language courses including Thai, French, Spanish, and Mandarin Chinese. High school students are required to complete a minimum of two years of a world language, reflecting the school's commitment to multilingual competency.
For students whose first language is not English, limited EAL (English as an Additional Language) support is available at the middle and high school levels, though an official diagnosis may be required for certain support services.
Assessment Approach
The school employs a US-style assessment framework, with grades and progress reports reflecting standards-based evaluation. The admissions process itself involves an Entrance Assessment that evaluates academic readiness and English proficiency, indicating that the school maintains selective academic standards.
Accreditation
The academic program is validated by WASC accreditation, ensuring that the curriculum meets internationally recognized standards and that CMIS graduates are well-positioned for university admission worldwide.
A Diverse, Multinational Community Rooted in Christian Values
With 500+ students from 30+ nationalities, CMIS fosters a close-knit international community shaped by Christian heritage, student government, and active service programs.
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Community Life at CMIS
Chiang Mai International School is home to a vibrant, multinational community of over 500 students representing more than 30 nationalities. This diversity is one of the school's defining characteristics, creating a rich cultural environment where students from across Asia, the Americas, Europe, and beyond learn and grow together.
Christian Heritage and Spiritual Life
Founded by the Church of Christ in Thailand, CMIS maintains a spiritual dimension to school life. Bible study groups and prayer groups are active on campus, and the school's values are shaped by its Christian founding principles. However, the school is inclusive and welcomes students of all backgrounds and faiths, with the spiritual life program being one component of a broader community culture rather than a mandatory religious requirement.
Student Government and Leadership
The Student Government (StuCo) serves as the umbrella organization for student leadership at CMIS, open to students in Grades 6–12. StuCo provides students with opportunities to develop leadership skills, organize school events, and represent the student body in school governance. This structure gives students a meaningful voice in school life from middle school onward.
Service and Global Citizenship
Community service is embedded in the school's culture. The Interact Club (a Rotary-affiliated service organization) is active at the high school level, and community service is listed as one of the school's core program pillars alongside academics, arts, and athletics. Students are encouraged to engage with the local Chiang Mai community and develop a sense of global responsibility.
Parent and Family Involvement
The school has a PTG (Parent-Teacher Group) with an annual fee of 1,000 THB, indicating an organized parent community that participates in school life. The Alumni Association (annual fee 2,000 THB) also suggests an engaged network of graduates who maintain connections with the school.
Cultural Diversity in Practice
The presence of Thai language, culture, and history as a required subject for Thai national students, alongside world language offerings for all students, reflects the school's commitment to cultural awareness and respect. Activities such as Thai Dance as a club offering further demonstrate the integration of local Thai culture into the international school experience.
A Compact Urban Campus with Modern Facilities in Central Chiang Mai
Located in the Wat Ket district, CMIS occupies a well-developed urban campus with a gymnasium, auditorium, learning center, and recently renovated secondary building.
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Campus and Facilities
Chiang Mai International School is situated at 13 Chetupon Road, Wat Ket, Muang, Chiang Mai, placing it in a historically rich district of the city, approximately 15 minutes from Chiang Mai International Airport. The campus is compact by international school standards but has been thoughtfully developed over decades to provide a comprehensive learning environment.
Key Buildings and Facilities
McKean House serves as the administrative hub of the campus, housing school offices and administrative functions.
The Preschool Building (built 1958) provides a dedicated early childhood environment, while the Elementary Building (1997) houses primary school classrooms and resources.
The Secondary Building is the most recently upgraded structure on campus, having undergone a full renovation in 2021 and an expansion in 2022. It includes the Health Center and Student Support Office, reflecting the school's investment in student wellbeing alongside academics.
The Auditorium (built 1988, renovated 2017) serves as the venue for school performances, assemblies, and community events, providing a dedicated space for the arts and school-wide gatherings.
The Gymnasium is a full indoor sports facility with basketball and volleyball courts. The second floor of the gymnasium houses language and dance classrooms, making efficient use of the space. An outdoor Covered Court (completed 2017) supplements the gymnasium for additional sports and activities.
The Learning Center and Cafeteria (opened 2019) is the newest major addition to the campus, combining library and study resources with a dining facility. This modern building reflects the school's commitment to contemporary learning environments.
A Health Center and Student Support Office are integrated into the secondary building, ensuring that medical and learning support services are readily accessible to students.
Campus Atmosphere
The urban setting means the campus does not have expansive outdoor fields or a swimming pool on-site, but the school compensates with well-maintained indoor and covered facilities. The mix of historic buildings (some dating to the 1950s) and modern renovations gives the campus a layered character that reflects its long history. The relatively small student body (500+) contributes to a close-knit atmosphere where students and teachers know each other well.
Selective Admissions with Entrance Assessment and English Proficiency Requirements
CMIS describes its admissions as highly competitive, requiring an entrance assessment, age-appropriate English proficiency, and review of prior academic records.
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Admissions at CMIS
Chiang Mai International School describes its admissions process as highly competitive, reflecting the school's selective approach to enrollment. The school seeks students who demonstrate both academic readiness and the English proficiency needed to succeed in an all-English instructional environment.
Admissions Process
The admissions process at CMIS involves several key components:
- Application Submission: Families submit an application with a non-refundable Application Fee of 5,000 THB.
- Entrance Assessment: All applicants undergo an entrance assessment that evaluates academic ability and English language proficiency. The assessment is tailored to the applicant's grade level.
- Academic Records Review: Prior school reports and academic records are reviewed as part of the evaluation process.
- Behavioral and Social Fit: The school assesses whether applicants demonstrate the behavioral and social characteristics aligned with the CMIS community.
English Proficiency
Since all instruction is conducted in English, age-appropriate English proficiency is a prerequisite for admission. Students who do not meet the required English level may not be admitted, as the school's EAL support is limited (primarily available at the middle and high school levels).
Fees Upon Acceptance
Upon acceptance, families pay a New Student Enrollment Fee of 100,000 THB (one-time) to confirm their place. A Continuing Enrollment Deposit of 5,000 THB is also required. Additional annual fees include a Capital Levy of 10,000 THB and a PTG fee of 1,000 THB.
Selectivity and Availability
The school does not publicly disclose acceptance rates or enrollment capacity figures. Given the school's reputation as one of the oldest and most established international schools in Chiang Mai, demand for places is understood to be strong. Families are advised to apply early, particularly for popular grade levels.
Who CMIS Seeks
CMIS primarily serves the expatriate community in Chiang Mai, including the children of diplomats, business professionals, and missionaries, as well as Japanese and other Asian returnee students and local Thai families seeking an international education. The school's diverse community of 30+ nationalities reflects its broad appeal across the international community in northern Thailand.
About the School
- Established
- 1954
History
Chiang Mai International School was founded in 1954 by the Church of Christ in Thailand, making it one of the oldest international schools in northern Thailand. The school began with a preschool building constructed in 1958, followed by an elementary building in 1997. The secondary building was constructed in 1990 and underwent a full renovation in 2021 with an expansion in 2022. An auditorium was built in 1988 and renovated in 2017. A covered outdoor court was added in 2017, and a new Learning Center and Cafeteria were completed in 2019. Over seven decades, CMIS has grown from a small missionary school into a dynamic international institution serving over 500 students from 30+ nationalities.
Frequently Asked Questions
What curriculum does Chiang Mai International School teach?
Chiang Mai International School offers US Curriculum and Advanced Placement (AP).
How much is annual tuition at Chiang Mai International School?
Annual tuition at Chiang Mai International School ranges from THB 341,700 to THB 580,200 (THB), depending on the grade level.
What additional fees should I budget for at Chiang Mai International School?
In addition to tuition, Chiang Mai International School charges a registration fee of THB 100,000, deposit of THB 5,000.
Where is Chiang Mai International School located?
Chiang Mai International School is located in Chiang Mai, Thailand.
What ages does Chiang Mai International School accept?
Chiang Mai International School accepts students from age 3 to 18.
Does Chiang Mai International School provide EAL/ESL support?
Yes, Chiang Mai International School provides EAL (English as an Additional Language) support.
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Last updated: Jun 20, 2026
Sources: the school's official website, accreditation bodies (e.g. IBO, CIS), and public records.