Colyton High School vs St Clair High School
A head-to-head comparison of two secondary schools in New South Wales, 2.1 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Colyton High School
St Marys · Government high school · 7-12
765 students · ICSEA 922
St Clair High School
St Clair · Government high school · 7-12
718 students · ICSEA 956
| Measure | Colyton High School St Marys NSW | St Clair High School St Clair NSW |
|---|---|---|
| Success Index | 27 Lower 50% | 44 Lower 50% |
| State rank (type) | #462 of 539 | #313 of 539 |
| National rank (type) | #1267 of 1,472 | #852 of 1,472 |
| Sector | Government | Government |
| Type | Secondary | Secondary |
| Year range | 7-12 | 7-12 |
| Students | 765 | 718 |
| Girls / boys | 383 / 382 | 324 / 394 |
| Foundation intake | – | – |
| Year 7 cohort | 141 | 129 |
| Year 12 cohort | 79 | 69 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -1% | +10% |
| ICSEA Average 1000 | 922 | 956 |
| ICSEA percentile | 16th | 27th |
| Top SEA quarter | 3% | 5% |
| Bottom SEA quarter | 63% | 50% |
| Students per teacher | 12.6 | 11.3 |
| Teaching staff (FTE) | 60.9 | 63.7 |
| Non-teaching staff (FTE) | 13.7 | 18.3 |
| Language background other than English | 42% | 37% |
| Indigenous students | 11% | 9% |
| Suburb | St Marys 2760 | St Clair 2759 |
| Council area | Penrith | Penrith |
| Remoteness | Major Cities | Major Cities |
| Website | colyton-h.schools.nsw.gov.au | stclair-h.schools.nsw.gov.au |
The verdict
- •St Clair High School scores higher on the Success Index (44.3 vs 26.6).
- •St Clair High School has the higher ICSEA (956 vs 922), indicating a more advantaged community.
- •St Clair High School has fewer students per teacher (11.3 vs 12.6).
- •Colyton High School is the larger school with 765 students compared with 718.
- •St Clair High School has grown faster over five years (10% vs -1%).
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 Colyton High School better than St Clair High School?
On the Success Index, St Clair High School ranks higher (44.3 vs 26.6 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 Colyton High School and St Clair High School?
About 2.1 km in a straight line, between St Marys and St Clair in New South Wales.
Which has the better student-to-teacher ratio?
Colyton High School has 12.6 students per full-time-equivalent teacher and St Clair High School has 11.3.
How do Colyton High School and St Clair High School rank in NSW?
Colyton High School is 462nd of 539 and St Clair High School is 313th of 539 among secondary schools in New South Wales on the 2025 Success Index.