International School Bangkok

Academic Excellence Through Dual Pathways

International School Bangkok stands out among Southeast Asian international schools for offering a genuine dual-pathway approach in its Upper School: students may pursue either the IB Diploma Programme (IBDP) or Advanced Placement (AP) courses, or a combination of both, giving families meaningful choice at the secondary level.

IB Diploma Results

In the 2025 cohort, 95 students sat the IB Diploma examinations, achieving an average score of 34 points against a global average of 30.58. The highest score recorded was 44 out of 45. Sixteen percent of candidates scored 40 or above — a benchmark widely used by universities to identify exceptional IB candidates — and 34% earned the prestigious Bilingual Diploma. Critically, 100% of candidates earned the IB Diploma, reflecting strong academic preparation and support.

AP Programme Growth

AP participation has grown dramatically, with 28.5% of the student body sitting at least one AP exam in 2025, totalling 277 examination sittings — up significantly from 32 exams in 2024. This rapid expansion reflects increasing student interest in the US college application pathway alongside IB.

Curriculum Structure

The curriculum begins with a US-framework elementary programme and transitions through Middle School before students select their Upper School pathway in Grade 10. Core subjects across Language Arts, Mathematics, Sciences, Social Studies, World Languages, Arts, and Physical Education are taught throughout. High School students access 30+ AP subjects or full IB subject groups including Higher Level options in Mathematics, Physics, Chemistry, Biology, Economics, History, and the Arts.

University Preparation

The dual-pathway model is specifically designed to maximise students' university options across North America, the United Kingdom, and globally. The 2025 cohort's matriculation destinations included Stanford University, UC Berkeley, the University of Hong Kong, and numerous other highly selective institutions worldwide, as well as Thai universities such as Thammasat.

Personalised Learning Ethos

ISB describes itself as 'proudly independent', emphasising a personalised education model that tailors support to individual student needs. Two school psychologists and nine counsellors across the three divisions support academic and personal development throughout a student's journey.

A Seven-Decade Journey

International School Bangkok has one of the longest histories of any international school in Southeast Asia. Established in 1951 — a period when Bangkok was rapidly attracting diplomats, international business personnel, and development organisation staff — the school was originally known as the International Children's Centre, reflecting its community-service mission.

Early Growth

In its early decades ISB grew alongside Thailand's increasing engagement with the international community. By 1960 the school was active enough in regional student life to participate in inaugural international athletic conferences including the International Schools Athletic Association (ISAA), which remains a cornerstone of ISB's sporting identity today.

Relocation to Nichada Thani

A defining moment in ISB's history was its relocation to the Nichada Thani residential community in Nonthaburi Province, north of Bangkok. This purpose-designed gated community provided ISB with the expansive campus it needed to grow into a full Pre-K3–Grade 12 institution with world-class facilities. The Nichada Thani location gives ISB a distinctive campus-community character that sets it apart from inner-city international schools.

Accreditation Milestones

ISB has earned recognition from multiple international bodies, including:

• WASC (Western Association of Schools and Colleges)
• CIS (Council of International Schools)
• IB World School designation for the IB Diploma Programme
• NAIS membership (National Association of Independent Schools)
• EARCOS and ISAT regional network membership

Non-Profit Commitment

Throughout its history ISB has operated as a non-profit institution, governed independently without commercial shareholders. This governance model has allowed the school to reinvest surpluses into facilities and programmes rather than distribute profits, contributing to the high-quality learning environment students experience today.

Present Day

Today ISB serves approximately 1,700 students from more than 60 nationalities, staffed by approximately 220 teachers. It is widely regarded as one of Bangkok's and Southeast Asia's most prestigious international schools, consistently sending graduates to top universities across North America, Europe, and Asia.

A Campus Unlike Any Other in Bangkok

International School Bangkok occupies a large campus within the Nichada Thani residential estate in Pakkret, Nonthaburi — approximately 20 km north of central Bangkok. This setting gives ISB a character quite different from schools located in the city centre: the campus feels more like a small town than an urban school, with wide open spaces, abundant greenery, and a strong sense of community that extends beyond school hours.

Facilities Befitting a Premier School

ISB's campus features a comprehensive range of facilities across four categories:

Sports & Recreation:

• 25-metre, 8-lane indoor swimming pool
• Multiple basketball and tennis courts
• Football (soccer) pitches
• Athletic track
• Gymnasium and martial arts dojo
• Sky Park and Parkour Park (outdoor athletic areas)

Academic Facilities:

• Fully equipped science laboratories (Chemistry, Biology, Physics)
• Technology workshop and IT laboratories
• Multimedia library and media centre
• Dedicated Elementary, Middle, and High School buildings

Arts Facilities:

• Music rooms and rehearsal spaces
• Drama/performance hall
• Dance studios
• Visual arts rooms and studio spaces

Community & Wellbeing:

• Large cafeteria serving breakfast and lunch
• Health Centre staffed by registered nurses (7:00–20:00 weekdays)
• Counselling suites with nine dedicated counsellors and two psychologists
• Community gathering spaces and parent-access areas

The Nichada Thani Effect

The school's location within a gated residential community means that many ISB families also live on-site or in the immediate vicinity, creating a uniquely cohesive school community. Students and families share the same streets, swimming pools, and recreational facilities outside school hours, fostering genuine friendships that extend beyond the classroom. This is a significant draw for expatriate families seeking a supportive transition to Bangkok life.

Transport Infrastructure

For families living elsewhere in Bangkok, ISB operates an extensive school bus network through Montri Transport, covering major residential areas including Sukhumvit and other key districts. Annual bus fees range from approximately 111,300–178,000 THB depending on distance, making the commute feasible even from central Bangkok.

Student Wellbeing as a Strategic Priority

International School Bangkok demonstrates a serious, multi-layered commitment to student wellbeing — arguably one of the strongest pastoral care systems among Bangkok's international schools.

Counselling Services

ISB employs a dedicated team of nine school counsellors distributed across all three school divisions:

• Elementary School: 3 counsellors
• Middle School: 2 counsellors
• High School: 4 counsellors

In addition, two school psychologists provide specialised mental health and learning support across the school. This staffing ratio significantly exceeds what many comparable international schools in the region provide, signalling a genuine institutional commitment to emotional and psychological wellbeing.

Counsellors support students with academic planning, college/university counselling, personal development, and social-emotional learning. At the High School level, counsellors also play a critical role in guiding students through university applications and pathway selection between IB and AP.

Health Centre

ISB's Health Centre is staffed by qualified Registered Nurses and operates from 7:00 am to 8:00 pm on weekdays — far beyond typical school hours. This extended schedule ensures that students engaged in after-school activities and sports programmes have access to professional medical support. The facility handles day-to-day health concerns and liaises with parents and external medical providers when needed.

Safeguarding and Child Protection

ISB maintains a comprehensive Safeguarding of Children policy, publicly articulated as: 'Every child should feel safe, cared for, and advocated for at all times.' This framework governs staff conduct, reporting obligations, and institutional responses to welfare concerns — aligning ISB with international best-practice standards for child protection in schools.

Learning and EAL Support

For students with diverse learning needs, ISB offers both an English as an Additional Language (EAL) programme and a dedicated Learning Support (LS) programme. Importantly, students may access support programmes concurrently with mainstream academic classes, allowing them to progress within the standard curriculum while receiving tailored assistance — an inclusive model that benefits the school's highly diverse, multilingual student population.

No Boarding, but a Safe Community Environment

ISB does not operate boarding facilities, but its location within the Nichada Thani residential estate effectively creates a safe, campus-community feeling that provides many of the security benefits associated with residential schools.

A Genuinely International Community

At its core, International School Bangkok is built around the idea that diversity is not merely a statistic — it is an educational resource. With approximately 1,700 students representing more than 60 nationalities, ISB's classrooms are naturally international environments in which cultural exchange happens organically, every day.

Student Demographics

Approximately 83% of students are international (expatriate or internationally mobile families), with around 17% being Thai or locally resident students. This demographic balance ensures a genuinely global campus culture while maintaining strong connections to the host country. Thai language and culture are explicitly embedded in the curriculum as a compulsory subject at the Elementary level, fostering respect for the country in which the school is situated.

Language Diversity and Support

The ISB community speaks dozens of first languages. The school supports this diversity through:

• EAL (English as an Additional Language) support for non-native English speakers
• Mother-tongue language clubs (Japanese, Chinese, Spanish, French, and others)
• Language learning options in Thai, Mandarin Chinese, Japanese, Spanish, and French
• A bilingual diploma pathway within the IB (34% of 2025 IB graduates earned Bilingual Diplomas)

Non-Profit Ethos

ISB's status as a non-profit organisation is central to its community identity. Rather than generating returns for shareholders, all revenue is reinvested into facilities, programmes, and staffing. This ethos aligns with ISB's stated mission to serve the international community in Bangkok rather than operate as a commercial enterprise — a distinction families frequently cite when choosing ISB over for-profit alternatives.

Extracurricular Community

ISB's extracurricular programme — spanning sports, arts, academic clubs, service organisations, and language societies — creates multiple entry points for students to build friendships across year groups and nationalities. Participation in regional competitions through ISAA, SEASAC, and IASAS further embeds ISB students in a broader community of international school peers across Asia.

Parent and Family Engagement

The Nichada Thani campus setting facilitates unusually close parent-school relationships. The International School Association (ISA) — a parent organisation — is formally recognised by the school, with a nominal annual membership fee (10 THB), underscoring the school's commitment to accessible, inclusive parent participation.