Pittwater House Schools vs St Luke's Grammar School
A head-to-head comparison of two combined schools in New South Wales, 2.2 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Pittwater House Schools
Collaroy · Independent combined · K-12
1,002 students · ICSEA 1158
St Luke's Grammar School
Dee Why · Independent combined · K-12
1,481 students · ICSEA 1178
| Measure | Pittwater House Schools Collaroy NSW | St Luke's Grammar School Dee Why NSW |
|---|---|---|
| Success Index | 83 Top 5% | 85 Top 5% |
| State rank (type) | #22 of 314 | #14 of 314 |
| National rank (type) | #65 of 1,259 | #46 of 1,259 |
| Sector | Independent | Independent |
| Type | Combined | Combined |
| Year range | K-12 | K-12 |
| Students | 1,002 | 1,481 |
| Girls / boys | 464 / 538 | 719 / 762 |
| Foundation intake | 8 | 73 |
| Year 7 cohort | 142 | 168 |
| Year 12 cohort | 110 | 128 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +24% | +24% |
| ICSEA Average 1000 | 1158 | 1178 |
| ICSEA percentile | 96th | 98th |
| Top SEA quarter | 62% | 71% |
| Bottom SEA quarter | 2% | 1% |
| Students per teacher | 9.5 | 12.1 |
| Teaching staff (FTE) | 105.4 | 122.1 |
| Non-teaching staff (FTE) | 48.1 | 44.8 |
| Language background other than English | 19% | 14% |
| Indigenous students | 0% | 0% |
| Suburb | Collaroy 2097 | Dee Why 2099 |
| Council area | Northern Beaches | Northern Beaches |
| Remoteness | Major Cities | Major Cities |
| Website | pittwaterhouse.com.au/ | www.stlukes.nsw.edu.au |
The verdict
- •St Luke's Grammar School scores higher on the Success Index (84.6 vs 82.9).
- •St Luke's Grammar School has the higher ICSEA (1178 vs 1158), indicating a more advantaged community.
- •Pittwater House Schools has fewer students per teacher (9.5 vs 12.1).
- •St Luke's Grammar School is the larger school with 1,481 students compared with 1,002.
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 Pittwater House Schools better than St Luke's Grammar School?
On the Success Index, St Luke's Grammar School ranks higher (84.6 vs 82.9 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 Pittwater House Schools and St Luke's Grammar School?
About 2.2 km in a straight line, between Collaroy and Dee Why in New South Wales.
Which has the better student-to-teacher ratio?
Pittwater House Schools has 9.5 students per full-time-equivalent teacher and St Luke's Grammar School has 12.1.
How do Pittwater House Schools and St Luke's Grammar School rank in NSW?
Pittwater House Schools is 22nd of 314 and St Luke's Grammar School is 14th of 314 among combined schools in New South Wales on the 2025 Success Index.