International Grammar School vs Kambala
A head-to-head comparison of two combined schools in New South Wales, 7.3 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
International Grammar School
Ultimo · Independent combined · K-12
1,224 students · ICSEA 1170
Kambala
Rose Bay · Independent combined · K-12
986 students · ICSEA 1169
| Measure | International Grammar School Ultimo NSW | Kambala Rose Bay NSW |
|---|---|---|
| Success Index | 82 Top 10% | 87 Top 5% |
| State rank (type) | #32 of 314 | #8 of 314 |
| National rank (type) | #77 of 1,259 | #23 of 1,259 |
| Sector | Independent | Independent |
| Type | Combined | Combined |
| Year range | K-12 | K-12 |
| Students | 1,224 | 986 |
| Girls / boys | 527 / 697 | 986 / 0 |
| Foundation intake | 60 | 39 |
| Year 7 cohort | 103 | 109 |
| Year 12 cohort | 106 | 96 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +4% | +2% |
| ICSEA Average 1000 | 1170 | 1169 |
| ICSEA percentile | 98th | 98th |
| Top SEA quarter | 71% | 70% |
| Bottom SEA quarter | 2% | 1% |
| Students per teacher | 9.7 | 8.9 |
| Teaching staff (FTE) | 126.5 | 110.7 |
| Non-teaching staff (FTE) | 55.2 | 81.7 |
| Language background other than English | 26% | 33% |
| Indigenous students | 2% | 1% |
| Suburb | Ultimo 2007 | Rose Bay 2029 |
| Council area | Sydney | Woollahra |
| Remoteness | Major Cities | Major Cities |
| Website | www.igssyd.nsw.edu.au | www.kambala.nsw.edu.au |
The verdict
- •Kambala scores higher on the Success Index (87.2 vs 81.9).
- •International Grammar School has the higher ICSEA (1170 vs 1169), indicating a more advantaged community.
- •Kambala has fewer students per teacher (8.9 vs 9.7).
- •International Grammar School is the larger school with 1,224 students compared with 986.
The Success Index summarises community advantage, resourcing and momentum from ACARA data. It does not measure teaching quality, results or fit. Methodology.
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Frequently asked questions
Is International Grammar School better than Kambala?
On the Success Index, Kambala ranks higher (87.2 vs 81.9 out of 100). The index measures community advantage and momentum from ACARA data, not teaching quality, so visit both schools before deciding.
How far apart are International Grammar School and Kambala?
About 7.3 km in a straight line, between Ultimo and Rose Bay in New South Wales.
Which has the better student-to-teacher ratio?
International Grammar School has 9.7 students per full-time-equivalent teacher and Kambala has 8.9.
How do International Grammar School and Kambala rank in NSW?
International Grammar School is 32nd of 314 and Kambala is 8th of 314 among combined schools in New South Wales on the 2025 Success Index.