Dhirubhai Ambani International School
🇮🇳 Mumbai · Founded 2003 · IB / British / National · Ages Kindergarten to Grade 12
Elite Mumbai IB day school with a world-leading published Diploma average.
Curricula
IB, British, National
Age range
Kindergarten to Grade 12
Languages of instruction
English
Enrollment
1,087
Boarding
No (day school)
IB authorised
DP
Accreditations
CISCE (Council for the Indian School Certificate Examinations), CAIE (Cambridge Assessment International Education), International Baccalaureate Organization (IB), Council of International Schools (CIS), New England Association of Schools and Colleges (NEASC)
Tier Profile
We only tier dimensions backed by a public inspection verdict or verifiable accreditation. Other dimensions show a data flag — never a guessed score.
BrightKey's Assessment
Dhirubhai Ambani International School (DAIS) is a K-12 co-educational international day school in the Bandra Kurla Complex, Mumbai, established in 2003. It runs a hybrid academic model: students follow an Indian-board and Cambridge pathway through the middle years, sitting ICSE and IGCSE 'Year 10' examinations, and then move to the IB Diploma Programme in Grades 11 and 12. The school reports a student body of 1,087 with 187 teachers, of whom 27 are expatriates.
DAIS is unusually heavily accredited for a single campus. It is affiliated to the CISCE (Council for the Indian School Certificate Examinations) and to CAIE (Cambridge Assessment International Education), is authorised by the IB to offer the Diploma Programme, and is additionally accredited by the Council of International Schools (CIS) and the New England Association of Schools and Colleges (NEASC). This breadth of accreditation, rather than any government inspection band, is what underpins its quality-assurance position in the Indian system.
The school is best known for its IB Diploma outcomes. For the Class of 2025 it published an average score of 39.7 out of 45 against a worldwide average of 30.58, a 100% pass rate across all 110 candidates, five perfect 45-point scores, and 61 students (55% of the cohort) scoring 40 or above. These are school-published, externally unverified figures, but they are consistent with the reputation that places DAIS among the top-performing IB schools globally.
India has no Ofsted-style graded inspection regime, so there is no published government rating band to cite. DAIS's standing instead rests on its layered Cambridge, IB, CISCE, CIS and NEASC accreditations, which is why it is tiered on accreditation depth rather than on an inspection grade.
Why These Ratings?
Inspection & AccreditationA — Excellent
India operates no Ofsted-style graded inspection regime, so there is no published verbatim band that could justify an 'S'. DAIS instead carries deep, independently verifiable accreditation: CISCE affiliation, CAIE/Cambridge, IB Diploma authorisation, and membership/accreditation with CIS and NEASC. That stacked accreditation depth supports an 'A'. The school's famous IB averages are academic placement outcomes, not an inspection grade, and were deliberately excluded from this tier.
Strengths & Trade-offs
Strengths
- World-leading published IB Diploma average of 39.7/45 for 2025 with a 100% pass rate across 110 candidates
- Layered accreditation across CISCE, Cambridge (CAIE), IB, CIS and NEASC
- Authorised IB Diploma Programme school continuously since the school's 2003 founding
- Five perfect 45-point IB scores and 55% of the 2025 cohort scoring 40 or above
- Strong faculty depth with 187 teachers, including 27 expatriate staff, for 1,087 students
Trade-offs
- No published fee schedule, so cost is opaque to prospective families
- ICSE pathway is being phased out, with the final ICSE batch sitting examinations in March 2026
- No government graded inspection band exists in India to externally benchmark the school
- Headline IB results are school-published and not independently audited
Is It Right For You?
Best For
- ✓Academically ambitious families targeting top global university placement via the IB Diploma
- ✓Mumbai-based families wanting an Indian-board plus Cambridge plus IB pathway under one roof
- ✓Students who thrive in a high-performance, results-driven environment
- ✓Internationally mobile families seeking CIS/NEASC-accredited continuity
Not Ideal For
- ✕Families needing boarding, as DAIS is a day school only
- ✕Families seeking the full IB continuum, as only the Diploma Programme is offered (no PYP or MYP)
- ✕Families needing published, predictable fee transparency before applying
- ✕Students requiring documented English-as-additional-language support, which is not publicly detailed
Curriculum
A hybrid pathway: students sit ICSE and IGCSE 'Year 10' examinations in the middle years, then take the IB Diploma Programme in Grades 11-12. The school notes the ICSE programme is being phased out, with the final ICSE batch examined in March 2026, leaving an IGCSE-then-IBDP route going forward. Only the IB Diploma is offered, not PYP or MYP.
Fees
DAIS does not publish a fee schedule; the admissions page provides only contact details. Any figures circulating on third-party aggregator sites are not school-stated and are omitted here.
Admissions
Primary entry points are at Kindergarten, Class VIII and Class XI per the school's admissions notices; the school is contacted directly for application details rather than via a published fee or place-availability portal.
Campus Life
A single co-educational day campus in the Bandra Kurla Complex serving 1,087 students with 187 teachers. The school reports a culturally diverse student body and international affiliations including Round Square and THIMUN, with no boarding provision.
University Placement
School-reported · not independently verified
School-reported, unverified: DAIS published an average IB Diploma score of 39.7/45 for the Class of 2025 against a worldwide average of 30.58, a 100% pass rate across all 110 candidates, five perfect scores of 45, and 61 students (55%) scoring 40 or above, with a mean grade of 6.2 versus a worldwide 4.9.
Sources
Every verifiable fact carries a public source — verify it yourself.
- DAIS — About Us (founding, curricula, enrolment, accreditations, day school) · 2026-06
- DAIS — Academics (curriculum by grade, ICSE phase-out) · 2026-06
- DAIS — IB Diploma Class of 2025 results · 2026-06
- DAIS — Admissions (entry points, contact) · 2026-06
- Wikipedia — Dhirubhai Ambani International School (IB World School since Jan 2003) · 2026-06
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