International School Bangkok vs Shrewsbury International School Bangkok
🇹🇭 Bangkok · Side-by-side comparison on verifiable public data.
Neither International School Bangkok nor Shrewsbury International School Bangkok sits in a market with a public inspectorate, so both are assessed on verifiable accreditation, curriculum authorisation, and published data rather than an official quality rating. Curriculum is the core differentiator: International School Bangkok offers American, IB while Shrewsbury International School Bangkok offers British — the choice should follow the family's target qualification system. Both are day schools with fees in the same market band — see the table below for the figures, and verify against each school's own published fees.
Key Facts
| International School Bangkok | Shrewsbury International School Bangkok | |
|---|---|---|
| Curriculum | American / IB | British |
| Ages | 3–18 | 2–18 |
| Languages of instruction | English | English |
| Annual fees | THB 659,000–1,197,000 | THB 691,800–1,208,400 |
| Enrollment | 1,700 | 1,785 |
| Boarding | Day only | Day only |
| Accreditations | WASC, CIS, EARCOS, ISAT | CIS, FOBISIA, HMC, ONESQA |
Strengths
- ✓70+ year track record as Thailand's first international school, with institutional stability and a large ~1,700-student community
- ✓Dual university pathways — both IB Diploma and AP available within one school, plus an ISB Diploma option
- ✓Strong published IB results: Class of 2025 average 34, top score 44, 16% scoring 40+
- ✓Deep accreditation: both WASC and CIS, plus IB authorisation
- ✓Diverse community spanning 60+ nationalities
- ✓Authentic affiliation with Shrewsbury School UK (heritage British public-school brand)
- ✓Full continuous British pathway, ages 2–18 (EYFS → A-Level)
- ✓CIS-accredited plus FOBISIA/HMC membership (credible international-school network)
- ✓Strong school-reported A-Level/IGCSE results and broad university placement track record
- ✓Two purpose-built campuses giving age-appropriate environments (Riverside + City)
Trade-offs
- !Premium fees: high-school tuition THB 1,197,000/year plus a THB 260,000 one-time registration fee place ISB at the top of the Bangkok market
- !EAL/ESL support is not described on public pages — families needing English-language support cannot verify provision
- !Located in Nichada Thani (Pakkret, Nonthaburi), well north of central Bangkok — a commute consideration
- !Exact campus size/acreage is not published
- !No boarding option, so it serves only families resident in the area
- !No published BSO/ISI inspection report — no independent verbatim quality band
- !Academic results and placements are school-reported, not externally audited
- !Premium fees (up to ~THB 1.2M/yr) place it at the top end of the Bangkok market
- !Official fees page not publicly retrievable at the standard URL — fee figures sourced from a third party, should be confirmed
- !Large enrolment (~1,800–2,000) may not suit families seeking a small-school feel
Best Fit For
- • Expatriate and internationally mobile families wanting a stable American-curriculum school with US university orientation
- • Students who want to choose between IB Diploma and AP routes within a single school
- • Families already living in or near the Nichada Thani / northern Bangkok area
- • High-achieving students targeting selective North American and global universities
- • Families wanting a heritage British curriculum with a UK school lineage
- • Students targeting UK (Russell Group) or competitive US university pathways
- • Expat and Thai families seeking a long-established, large, well-resourced school
- • Younger children starting at the City Campus and progressing through to Riverside sixth form
University Placement
School-reported · not independently verified
School-reported, unverified: ISB reports Class of 2025 matriculation including Stanford, Cornell, UC Berkeley, UCLA, NUS, UCL and University of Toronto. ISB offers AP rather than A-Levels; 277 AP exams were completed in 2025. Figures are school-published and not independently verified.
School-reported, unverified: 2025 results (65% A*/A at A-Level, 74% A*/A at IGCSE) and destinations including UK Russell Group and US universities. No third-party-audited placement figures are public.
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Frequently Asked Questions
Should I choose International School Bangkok or Shrewsbury International School Bangkok?
International School Bangkok is best for: Expatriate and internationally mobile families wanting a stable American-curriculum school with US university orientation. Shrewsbury International School Bangkok is best for: Families wanting a heritage British curriculum with a UK school lineage. The right choice depends on target curriculum, budget, and family priorities — the two are not linearly comparable.
How do fees compare between International School Bangkok and Shrewsbury International School Bangkok?
International School Bangkok: THB 659,000–1,197,000. Shrewsbury International School Bangkok: THB 691,800–1,208,400. Verify against each school's own published fees; some figures are sourced from third-party aggregators.
What curricula do International School Bangkok and Shrewsbury International School Bangkok offer?
International School Bangkok: American, IB. Shrewsbury International School Bangkok: British.
Do International School Bangkok or Shrewsbury International School Bangkok offer boarding?
International School Bangkok: day school only. Shrewsbury International School Bangkok: day school only.
This comparison is BrightKey's independent assessment using verifiable public data only. University-placement figures are school-reported and not independently verified. BrightKey takes no payments from schools. Our method →