St Mary's Flexible School vs St Marys Senior High School
A head-to-head comparison of two schools in New South Wales, 591 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
St Mary's Flexible School
St Marys · Independent special · 7-10
80 students · ICSEA 832
St Marys Senior High School
St Marys · Government high school · 11-12
926 students · ICSEA 1052
| Measure | St Mary's Flexible School St Marys NSW | St Marys Senior High School St Marys NSW |
|---|---|---|
| Success Index | – Not rated | 62 Top 50% |
| State rank (type) | – | #184 of 539 |
| National rank (type) | – | #463 of 1,472 |
| Sector | Independent | Government |
| Type | Special | Secondary |
| Year range | 7-10 | 11-12 |
| Students | 80 | 926 |
| Girls / boys | 46 / 34 | 564 / 362 |
| Foundation intake | – | – |
| Year 7 cohort | 6 | – |
| Year 12 cohort | – | 463 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -5% | +2% |
| ICSEA Average 1000 | 832 | 1052 |
| ICSEA percentile | 4th | 69th |
| Top SEA quarter | 3% | 22% |
| Bottom SEA quarter | 74% | 17% |
| Students per teacher | 15.4 | 13.7 |
| Teaching staff (FTE) | 5.2 | 67.6 |
| Non-teaching staff (FTE) | 8.6 | 13.0 |
| Language background other than English | 0% | 73% |
| Indigenous students | 45% | 2% |
| Suburb | St Marys 2760 | St Marys 2760 |
| Council area | Penrith | Penrith |
| Remoteness | Major Cities | Major Cities |
| Website | stmarys.flexi.edu.au/ | stmaryssen-h.schools.nsw.gov.au |
The verdict
- •St Marys Senior High School has the higher ICSEA (1052 vs 832), indicating a more advantaged community.
- •St Marys Senior High School has fewer students per teacher (13.7 vs 15.4).
- •St Marys Senior High School is the larger school with 926 students compared with 80.
- •St Marys Senior High School has grown faster over five years (2% vs -5%).
- •St Mary's Flexible School is a independent school while St Marys Senior High School is a government 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 St Mary's Flexible School better than St Marys Senior High 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 St Mary's Flexible School and St Marys Senior High School?
About 591 m in a straight line, between St Marys and St Marys in New South Wales.
Which has the better student-to-teacher ratio?
St Mary's Flexible School has 15.4 students per full-time-equivalent teacher and St Marys Senior High School has 13.7.
How do St Mary's Flexible School and St Marys Senior High School rank in NSW?
St Mary's Flexible School is unranked and St Marys Senior High School is 184th of 539 among special schools in New South Wales on the 2025 Success Index.