Conservatorium High School vs Observatory Hill Environmental Education Centre
A head-to-head comparison of two schools in New South Wales, 772 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
Observatory Hill Environmental Education Centre
The Rocks · Government combined
| Measure | Conservatorium High School Sydney NSW | Observatory Hill Environmental Education Centre The Rocks NSW |
|---|---|---|
| Success Index | 86 Top 5% | – Not rated |
| State rank (type) | #5 of 539 | – |
| National rank (type) | #8 of 1,472 | – |
| Sector | Government | Government |
| Type | Secondary | Combined |
| Year range | 7-12 | – |
| Students | 156 | – |
| Girls / boys | 81 / 75 | – / – |
| Foundation intake | – | – |
| Year 7 cohort | 24 | – |
| Year 12 cohort | 40 | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +2% | – |
| ICSEA Average 1000 | 1194 | – |
| ICSEA percentile | 99th | – |
| Top SEA quarter | 72% | – |
| Bottom SEA quarter | 0% | – |
| Students per teacher | 7.7 | – |
| Teaching staff (FTE) | 20.0 | 2.0 |
| Non-teaching staff (FTE) | 5.8 | 1.2 |
| Language background other than English | 82% | – |
| Indigenous students | 0% | – |
| Suburb | Sydney 2000 | The Rocks 2000 |
| Council area | Sydney | Sydney |
| Remoteness | Major Cities | Major Cities |
| Website | conservat-h.schools.nsw.gov.au | observatoryhilleec.schools.nsw.gov.au |
The verdict
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 Observatory Hill Environmental Education Centre?
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 Conservatorium High School and Observatory Hill Environmental Education Centre?
About 772 m in a straight line, between Sydney and The Rocks in New South Wales.
Which has the better student-to-teacher ratio?
Staffing data is not available for one of the schools.
How do Conservatorium High School and Observatory Hill Environmental Education Centre rank in NSW?
Conservatorium High School is 5th of 539 and Observatory Hill Environmental Education Centre is unranked among secondary schools in New South Wales on the 2025 Success Index.