Australian International School vs ISS International School
🇸🇬 Singapore · Side-by-side comparison on verifiable public data.
Neither Australian International School nor ISS 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. Curriculum is the core differentiator: Australian International School offers Australian, IB, British while ISS International School offers IB, American — the choice should follow the family's target qualification system. One practical difference: Australian International School offers boarding while the other is day-only — decisive for families who need a residential option. Verify current fees against each school's own figures (see the table below).
Key Facts
| Australian International School | ISS International School | |
|---|---|---|
| Curriculum | Australian / IB / British | IB / American |
| Ages | 2 months–18 | 4–18 |
| Languages of instruction | English | English |
| Annual fees | SGD 43,030–53,518 | SGD 25,000–54,430 |
| Enrollment | 2,300 | — |
| Boarding | Yes | Day only |
| Accreditations | CIS, WASC, NSW Government Education | CIS, WASC, EARCOS, EduTrust, EAPISA |
Strengths
- ✓Genuinely distinctive Southern Hemisphere (January–December) academic calendar — ideal for families moving on the Australian school cycle
- ✓Broad multi-pathway curriculum: Australian Curriculum + IB PYP + Cambridge IGCSE + a choice of IB Diploma or NSW HSC at senior level
- ✓Very wide age span, from infant care (2 months) through Year 12, on one campus
- ✓Multiple recognized accreditations: CIS, WASC, IB World School, Cambridge International, NSW Government Education
- ✓Large, established community (opened 1993; ~2,300 students; 50+ nationalities)
- ✓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
Trade-offs
- !High fees: secondary tuition reaches SGD 53,518/year (2026), among the more expensive bands in Singapore
- !For-profit ownership under Cognita
- !Large size (~2,300 students) may not suit families seeking a small setting
- !No independent regulatory inspection report is publicly available (external references are editorial, e.g. Good Schools Guide)
- !The blended HSC/IB/IGCSE model, while broad, can be complex for families to navigate
- !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
Best Fit For
- • Families relocating on the Australian/Southern Hemisphere school calendar who want continuity of term timing
- • Families wanting a single school covering infancy through to age 18
- • Students who may benefit from a choice between IB Diploma and the Australian HSC at senior level
- • Families seeking an established, well-accredited, large international school in central-north Singapore
- • 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
University Placement
School-reported · not independently verified
School-reported, unverified: AIS states '100% university acceptance' with '99% securing a top-choice placement,' names destinations including Melbourne, Stanford, Cambridge and NUS, reports 15% of students achieving 40+ IB points, and over $2.67M in scholarships in 2024. These are 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.
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Frequently Asked Questions
Should I choose Australian International School or ISS International School?
Australian International School is best for: Families relocating on the Australian/Southern Hemisphere school calendar who want continuity of term timing. ISS International School is best for: Families wanting the full IB continuum (PYP→MYP→DP) with continuity across all stages. The right choice depends on target curriculum, budget, and family priorities — the two are not linearly comparable.
How do fees compare between Australian International School and ISS International School?
Australian International School: SGD 43,030–53,518. ISS International School: SGD 25,000–54,430. Verify against each school's own published fees; some figures are sourced from third-party aggregators.
What curricula do Australian International School and ISS International School offer?
Australian International School: Australian, IB, British. ISS International School: IB, American.
Do Australian International School or ISS International School offer boarding?
Australian International School: offers boarding. ISS 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 →