ISS International School vs Stamford American International School
🇸🇬 Singapore · Side-by-side comparison on verifiable public data.
Neither ISS International School nor Stamford American International School 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. Both run the same curriculum (IB, American), so the differences come down to pathway detail, campus culture, and specific language/boarding arrangements rather than the curriculum framework itself. 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
| ISS International School | Stamford American International School | |
|---|---|---|
| Curriculum | IB / American | American / IB |
| Ages | 4–18 | 2 months–18 |
| Languages of instruction | English | English |
| Annual fees | SGD 25,000–54,430 | SGD 30,820–56,110 |
| Boarding | Day only | Day only |
| Accreditations | CIS, WASC, EARCOS, EduTrust, EAPISA | WASC, CIS, EduTrust |
Strengths
- ✓Full IB continuum (PYP + MYP + DP) under one roof — uncommon and verifiable
- ✓Long track record: established 1981, one of Singapore's older international schools
- ✓Strong, layered accreditation for a small school: WASC (1986), CIS (2011), EduTrust 4-year certificate (2023–2027)
- ✓Dual senior pathway — IB Diploma plus an American-style High School Diploma
- ✓Explicit EAL / multilingual-learner support and a Bilingual Diploma option
- ✓Authorised for all three IB programmes (PYP, MYP, DP) as a full IB continuum school
- ✓Rare dual credential offering: IB DP plus AP, US High School Diploma and BTEC
- ✓Bilingual emphasis: school reports ~30% of students earn bilingual IB diplomas
- ✓Dual-accredited internationally (WASC + CIS) plus Singapore EduTrust certification
- ✓Broad age span (2 months–18 years) with a dedicated Early Learning Village campus
Trade-offs
- !Small scale typically means fewer specialist facilities, sports teams and CCA breadth than large campuses (ISS joined EAPISA, an association for small international schools)
- !No published total enrollment figure, limiting transparency on cohort size
- !Fees are mid-to-high (senior grades exceed SGD 50,000/year before development and protection-scheme fees), without the facilities footprint of similarly-priced larger schools
- !No independent inspectorate rating published (EduTrust is a regulatory certification, not a graded inspection)
- !Published IB results (top score 43; 94% diploma rate) are school-reported and not independently verified
- !For-profit ownership under the Cognita group, which may prioritize commercial outcomes alongside educational ones
- !High fees: SGD ~30,820–56,110 per year (2026/27, third-party source)
- !Large school across two campuses may feel less personal than smaller schools
- !No published IB Diploma average score located in public sources
- !No independent published inspection report located
Best Fit For
- • Families wanting the full IB continuum (PYP→MYP→DP) with continuity across all stages
- • Students who thrive in small classes with close teacher attention and mentorship
- • Internationally mobile / expat families needing strong EAL support and a Bilingual Diploma route
- • Families wanting an IBDP alternative (the American-style High School Diploma) within the same school
- • Families wanting an American-style education with the flexibility to pursue IB DP, AP or both
- • Internationally mobile families seeking WASC/CIS-recognized credentials
- • Families with very young children needing a continuous pathway from infancy through Grade 12
- • Students interested in bilingual/dual-language IB outcomes
University Placement
School-reported · not independently verified
School-reported, unverified: ISS publishes a highest IB score of 43, a 94% IB Diploma attainment rate, an 88% Bilingual Diploma rate and a 100% HSD pass rate (2024–25). No independently published IB average or university-placement list was found.
School-reported, unverified: SAIS publicizes that roughly 30% of students earn bilingual IB diplomas. No verified IB Diploma average score or university-destination data was located in public sources.
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Frequently Asked Questions
Should I choose ISS International School or Stamford American International School?
ISS International School is best for: Families wanting the full IB continuum (PYP→MYP→DP) with continuity across all stages. Stamford American International School is best for: Families wanting an American-style education with the flexibility to pursue IB DP, AP or both. The right choice depends on target curriculum, budget, and family priorities — the two are not linearly comparable.
How do fees compare between ISS International School and Stamford American International School?
ISS International School: SGD 25,000–54,430. Stamford American International School: SGD 30,820–56,110. Verify against each school's own published fees; some figures are sourced from third-party aggregators.
What curricula do ISS International School and Stamford American International School offer?
ISS International School: IB, American. Stamford American International School: American, IB.
Do ISS International School or Stamford American International School offer boarding?
ISS International School: day school only. Stamford American International School: 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 →