O'Connor Catholic College vs St Mary's Primary School
A head-to-head comparison of two schools in New South Wales, 1.6 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
O'Connor Catholic College
Armidale · Catholic high school · 7-12
511 students · ICSEA 1020
St Mary's Primary School
Armidale · Catholic primary · K-6
327 students · ICSEA 1038
| Measure | O'Connor Catholic College Armidale NSW | St Mary's Primary School Armidale NSW |
|---|---|---|
| Success Index | 57 Top 50% | 55 Top 50% |
| State rank (type) | #229 of 539 | #753 of 1,619 |
| National rank (type) | #589 of 1,472 | #2297 of 4,908 |
| Sector | Catholic | Catholic |
| Type | Secondary | Primary |
| Year range | 7-12 | K-6 |
| Students | 511 | 327 |
| Girls / boys | 239 / 272 | 169 / 158 |
| Foundation intake | – | 49 |
| Year 7 cohort | 108 | – |
| Year 12 cohort | 59 | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -6% | +3% |
| ICSEA Average 1000 | 1020 | 1038 |
| ICSEA percentile | 56th | 63th |
| Top SEA quarter | 18% | 25% |
| Bottom SEA quarter | 23% | 17% |
| Students per teacher | 10.9 | 15.1 |
| Teaching staff (FTE) | 46.9 | 21.6 |
| Non-teaching staff (FTE) | 19.6 | 9.4 |
| Language background other than English | 8% | 20% |
| Indigenous students | 9% | 11% |
| Suburb | Armidale 2350 | Armidale 2350 |
| Council area | Armidale | Armidale |
| Remoteness | Inner Regional | Inner Regional |
| Website | oconnor.nsw.edu.au/ | stmarysarmidale.catholic.edu.au/ |
The verdict
- •O'Connor Catholic College scores higher on the Success Index (56.6 vs 55.4).
- •St Mary's Primary School has the higher ICSEA (1038 vs 1020), indicating a more advantaged community.
- •O'Connor Catholic College has fewer students per teacher (10.9 vs 15.1).
- •O'Connor Catholic College is the larger school with 511 students compared with 327.
- •St Mary's Primary School has grown faster over five years (3% vs -6%).
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 O'Connor Catholic College better than St Mary's Primary School?
On the Success Index, O'Connor Catholic College ranks higher (56.6 vs 55.4 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 O'Connor Catholic College and St Mary's Primary School?
About 1.6 km in a straight line, between Armidale and Armidale in New South Wales.
Which has the better student-to-teacher ratio?
O'Connor Catholic College has 10.9 students per full-time-equivalent teacher and St Mary's Primary School has 15.1.
How do O'Connor Catholic College and St Mary's Primary School rank in NSW?
O'Connor Catholic College is 229th of 539 and St Mary's Primary School is 753rd of 1,619 among secondary schools in New South Wales on the 2025 Success Index.