ISB Bangkok campus
International School Bangkok (ISB) is a premier American-curriculum international school in Nichada Thani, Pak Kret. Established 1951, one of the oldest and largest international schools in Thailand. Offers American/IB Diploma curriculum, AP courses, and a non-profit governance model. Targets HNW expat and Thai families paying THB 1.0-1.4M annual tuition. Competes with Bangkok Patana, NIST, ISB, Brighton College, Harrow, and Shrewsbury in the elite-tier Bangkok international-school market.
Profile overview
International School Bangkok (ISB) is a premier American-curriculum international school in Nichada Thani, Pak Kret. Established 1951, one of the oldest and largest international schools in Thailand. Offers American/IB Diploma curriculum, AP courses, and a non-profit governance model. Targets HNW expat and Thai families paying THB 1.0-1.4M annual tuition. Competes with Bangkok Patana, NIST, ISB, Brighton College, Harrow, and Shrewsbury in the elite-tier Bangkok international-school market.
Business segments
Elementary
American-curriculum elementary school
American curriculum elementary (Grades K–5) at the Nichada Thani campus. Enrolment of approximately 1,800 students across all grade levels. Annual tuition in the range of $28,986–1.2M for elementary grades.
Middle and high school
AP and IB Diploma programme
Advanced Placement (AP) courses and optional IB Diploma Programme for Grades 11–12. Strong US university placement rate. Average SAT score above 1,400 across the ISB graduating cohort.
Non-profit model
Non-profit governance and reinvestment
ISB operates under a non-profit board-governed structure reinvesting all surpluses into campus facilities, teacher compensation, and bursaries. Governance model creates parent-community ownership and differentiates from for-profit school chains.
Peer comparison — Elite Bangkok international schools
ISB Bangkok
Curriculum
American / AP / IB Diploma
Annual tuition (THB, approx.)
$28,986–1.4M
Governance
Non-profit board
NIST International
Curriculum
IB (PYP, MYP, DP, CP)
Annual tuition (THB, approx.)
$20,290–1.1M
Governance
Non-profit
Harrow International Bangkok
Curriculum
British (Harrow UK)
Annual tuition (THB, approx.)
$26,087–1.3M
Governance
For-profit (GEMS Education)
| School | Curriculum | Annual tuition (THB, approx.) | Governance |
|---|---|---|---|
| ISB Bangkok | American / AP / IB Diploma | $28,986–1.4M | Non-profit board |
| NIST International | IB (PYP, MYP, DP, CP) | $20,290–1.1M | Non-profit |
| Harrow International Bangkok | British (Harrow UK) | $26,087–1.3M | For-profit (GEMS Education) |
| Brighton College Bangkok | British (Brighton UK) | $23,188–1.2M | For-profit |
Watchpoints 2025–2026
Expat demand
US expat community concentration
ISB's American-curriculum positioning makes it structurally dependent on the US expat community in Bangkok. Fluctuations in US multinational headcount in Thailand (e.g. energy sector or financial services pullbacks) directly affect enrolment.
Thai enrolment
Thai student share growth
Rising Thai family demand for American-curriculum education is expanding ISB's domestic Thai applicant pool. Thai students now represent approximately 30–40% of ISB enrolment, providing structural enrolment resilience beyond expat cycles.
Capacity
Campus expansion constraints
ISB's Nichada Thani campus has limited expansion land adjacent to existing facilities. Demand consistently exceeds available places, creating a waitlist-driven admissions model that reinforces brand exclusivity.
Related Market profiles
Peers, parents, partners, agencies, and other International School actors.