Conservatorium High School vs St Mary's Cathedral College
A head-to-head comparison of two schools in New South Wales, 876 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Conservatorium High School
Sydney · Government high school · 7-12
156 students · ICSEA 1194
St Mary's Cathedral College
Sydney · Catholic combined · K-12
937 students · ICSEA 1125
| Measure | Conservatorium High School Sydney NSW | St Mary's Cathedral College Sydney NSW |
|---|---|---|
| Success Index | 86 Top 5% | 75 Top 25% |
| State rank (type) | #5 of 539 | #63 of 314 |
| National rank (type) | #8 of 1,472 | #182 of 1,259 |
| Sector | Government | Catholic |
| Type | Secondary | Combined |
| Year range | 7-12 | K-12 |
| Students | 156 | 937 |
| Girls / boys | 81 / 75 | 127 / 810 |
| Foundation intake | – | 21 |
| Year 7 cohort | 24 | 155 |
| Year 12 cohort | 40 | 112 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +2% | +18% |
| ICSEA Average 1000 | 1194 | 1125 |
| ICSEA percentile | 99th | 90th |
| Top SEA quarter | 72% | 49% |
| Bottom SEA quarter | 0% | 4% |
| Students per teacher | 7.7 | 13.0 |
| Teaching staff (FTE) | 20.0 | 72.3 |
| Non-teaching staff (FTE) | 5.8 | 17.5 |
| Language background other than English | 82% | 61% |
| Indigenous students | 0% | 1% |
| Suburb | Sydney 2000 | Sydney 2000 |
| Council area | Sydney | Sydney |
| Remoteness | Major Cities | Major Cities |
| Website | conservat-h.schools.nsw.gov.au | smccsydney.syd.catholic.edu.au |
The verdict
- •Conservatorium High School scores higher on the Success Index (86.3 vs 74.9).
- •Conservatorium High School has the higher ICSEA (1194 vs 1125), indicating a more advantaged community.
- •Conservatorium High School has fewer students per teacher (7.7 vs 13.0).
- •St Mary's Cathedral College is the larger school with 937 students compared with 156.
- •St Mary's Cathedral College has grown faster over five years (18% vs 2%).
- •Conservatorium High School is a government school while St Mary's Cathedral 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 Conservatorium High School better than St Mary's Cathedral College?
On the Success Index, Conservatorium High School ranks higher (86.3 vs 74.9 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 Conservatorium High School and St Mary's Cathedral College?
About 876 m in a straight line, between Sydney and Sydney in New South Wales.
Which has the better student-to-teacher ratio?
Conservatorium High School has 7.7 students per full-time-equivalent teacher and St Mary's Cathedral College has 13.0.
How do Conservatorium High School and St Mary's Cathedral College rank in NSW?
Conservatorium High School is 5th of 539 and St Mary's Cathedral College is 63rd of 314 among secondary schools in New South Wales on the 2025 Success Index.