International School Bangkok (ISB)
International School in Bangkok
Quick answer
International School Bangkok (ISB) is a private not-for-profit PK-12 American school established in 1951 — Thailand's oldest international school. Students follow an American curriculum with both IB Diploma and AP pathways available at high school, drawing from 60 nationalities. Annual tuition runs $18,000-$30,000 USD (true cost ~$26,200), placing ISB in Bangkok's 99th cost percentile. Admissions are open; best suited to American-curriculum families wanting AP/IB optionality at the top of Bangkok's price tier.
Key facts
- Curriculum: American, IB leaving qualifications include IB Diploma, AP.
- Tuition: $18,000–$30,000/yr published annual range.
- 60 nationalities expat-heavy mix.
- Ages: 3-18 age range accepted.
- Accreditations: WASC, IBO, CIS verified.
50
60
Rolling
WASC, IBO, CIS
IB Diploma, AP
About International School Bangkok (ISB)
International School Bangkok (ISB) is a private, non-profit PK-12 American school in Thailand that has been providing quality education since 1951.
| Item | Amount |
|---|---|
| Annual tuition (USD) | $18,000 – $30,000 |
| Fee year | 2025-2026 |
| True annual cost (with hidden fees)how we calculate | $26,200(+9%) |
| First-year total (with registration + deposit) | $27,700 |
| Cost position in Bangkok | 99th percentile(premium tier) |
Hidden costs & fee notes
One of Thailand's oldest international schools. Capital levy significant. AP and IB Diploma.
American, IB
IB Diploma, AP
strong
Recommended neighborhoods
Nichada Thani, Chaengwattana, Muang Thong Thani
Is International School Bangkok (ISB) right for your family?
A School Fit Brief scores this school against your children's ages, learning needs, and budget — with hidden fee analysis, admissions timing, and a ranked shortlist of alternatives in Bangkok.
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At a Glance
Fee Position in Bangkok
PremiumSchool Profile
Student Diversity
Very diverse
Estimated Real Cost
Tuition + registration, transport, uniform, exams
One of Thailand's oldest international schools. Capital levy significant. AP and IB Diploma.
Decide on this school — and four others
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Disclaimer: School profiles are source-backed decision aids, not endorsements or official rankings. Tuition figures are approximate and may not include registration fees, uniforms, transport, or exam costs. Always verify directly with the school before applying. WhereNext is not affiliated with any school listed. This is not admissions consulting, legal advice, or official school placement guidance.