Abbotsleigh vs Knox Grammar School
A head-to-head comparison of two combined schools in New South Wales, 828 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Abbotsleigh
Wahroonga · Independent combined · K-12
1,634 students · ICSEA 1217
Knox Grammar School
Wahroonga · Independent combined · K-12
3,345 students · ICSEA 1187
| Measure | Abbotsleigh Wahroonga NSW | Knox Grammar School Wahroonga NSW |
|---|---|---|
| Success Index | 83 Top 5% | 83 Top 5% |
| State rank (type) | #21 of 314 | #24 of 314 |
| National rank (type) | #60 of 1,259 | #67 of 1,259 |
| Sector | Independent | Independent |
| Type | Combined | Combined |
| Year range | K-12 | K-12 |
| Students | 1,634 | 3,345 |
| Girls / boys | 1,634 / 0 | 73 / 3,272 |
| Foundation intake | 48 | 119 |
| Year 7 cohort | 193 | 380 |
| Year 12 cohort | 185 | 376 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +8% | +8% |
| ICSEA Average 1000 | 1217 | 1187 |
| ICSEA percentile | 99th | 99th |
| Top SEA quarter | 84% | 77% |
| Bottom SEA quarter | 1% | 1% |
| Students per teacher | 10.1 | 11.5 |
| Teaching staff (FTE) | 161.2 | 291.6 |
| Non-teaching staff (FTE) | 119.2 | 262.6 |
| Language background other than English | 67% | 53% |
| Indigenous students | 1% | 1% |
| Suburb | Wahroonga 2076 | Wahroonga 2076 |
| Council area | Ku-ring-gai | Ku-ring-gai |
| Remoteness | Major Cities | Major Cities |
| Website | www.abbotsleigh.nsw.edu.au | www.knox.nsw.edu.au/ |
The verdict
- •Both schools have almost identical Success Index scores (83.2 vs 82.8).
- •Abbotsleigh has the higher ICSEA (1217 vs 1187), indicating a more advantaged community.
- •Abbotsleigh has fewer students per teacher (10.1 vs 11.5).
- •Knox Grammar School is the larger school with 3,345 students compared with 1,634.
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 Abbotsleigh better than Knox Grammar School?
The two schools are very close on the Success Index. Differences in sector, size, year range and distance from home will matter more than the score.
How far apart are Abbotsleigh and Knox Grammar School?
About 828 m in a straight line, between Wahroonga and Wahroonga in New South Wales.
Which has the better student-to-teacher ratio?
Abbotsleigh has 10.1 students per full-time-equivalent teacher and Knox Grammar School has 11.5.
How do Abbotsleigh and Knox Grammar School rank in NSW?
Abbotsleigh is 21st of 314 and Knox Grammar School is 24th of 314 among combined schools in New South Wales on the 2025 Success Index.