Alpha Omega Senior College vs Trinity Catholic College
A head-to-head comparison of two secondary schools in New South Wales, 144 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Alpha Omega Senior College
Auburn · Independent high school · 7-12
822 students · ICSEA 1111
Trinity Catholic College
Auburn · Catholic high school · 7-12
1,313 students · ICSEA 1016
| Measure | Alpha Omega Senior College Auburn NSW | Trinity Catholic College Auburn NSW |
|---|---|---|
| Success Index | 82 Top 5% | 55 Top 50% |
| State rank (type) | #13 of 539 | #238 of 539 |
| National rank (type) | #42 of 1,472 | #624 of 1,472 |
| Sector | Independent | Catholic |
| Type | Secondary | Secondary |
| Year range | 7-12 | 7-12 |
| Students | 822 | 1,313 |
| Girls / boys | 401 / 421 | 644 / 669 |
| Foundation intake | – | – |
| Year 7 cohort | 113 | 246 |
| Year 12 cohort | 136 | 194 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +62% | +4% |
| ICSEA Average 1000 | 1111 | 1016 |
| ICSEA percentile | 87th | 54th |
| Top SEA quarter | 46% | 13% |
| Bottom SEA quarter | 9% | 31% |
| Students per teacher | 13.5 | 12.7 |
| Teaching staff (FTE) | 61.1 | 103.1 |
| Non-teaching staff (FTE) | 29.0 | 28.8 |
| Language background other than English | 99% | 94% |
| Indigenous students | 0% | 1% |
| Suburb | Auburn 2144 | Auburn 2144 |
| Council area | Cumberland | Cumberland |
| Remoteness | Major Cities | Major Cities |
| Website | www.aosc.nsw.edu.au/ | trinity.syd.catholic.edu.au |
The verdict
- •Alpha Omega Senior College scores higher on the Success Index (82.1 vs 55.1).
- •Alpha Omega Senior College has the higher ICSEA (1111 vs 1016), indicating a more advantaged community.
- •Trinity Catholic College has fewer students per teacher (12.7 vs 13.5).
- •Trinity Catholic College is the larger school with 1,313 students compared with 822.
- •Alpha Omega Senior College has grown faster over five years (62% vs 4%).
- •Alpha Omega Senior College is a independent school while Trinity Catholic College is a catholic school, so fees and enrolment rules differ.
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 Alpha Omega Senior College better than Trinity Catholic College?
On the Success Index, Alpha Omega Senior College ranks higher (82.1 vs 55.1 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 Alpha Omega Senior College and Trinity Catholic College?
About 144 m in a straight line, between Auburn and Auburn in New South Wales.
Which has the better student-to-teacher ratio?
Alpha Omega Senior College has 13.5 students per full-time-equivalent teacher and Trinity Catholic College has 12.7.
How do Alpha Omega Senior College and Trinity Catholic College rank in NSW?
Alpha Omega Senior College is 13th of 539 and Trinity Catholic College is 238th of 539 among secondary schools in New South Wales on the 2025 Success Index.