Mount Stromlo High School vs St Thomas the Apostle Primary School
A head-to-head comparison of two schools in Australian Capital Territory, 2.9 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Mount Stromlo High School
Waramanga · Government high school · 7-10
846 students · ICSEA 1085
St Thomas the Apostle Primary School
Kambah · Catholic primary · K-6
325 students · ICSEA 1082
| Measure | Mount Stromlo High School Waramanga ACT | St Thomas the Apostle Primary School Kambah ACT |
|---|---|---|
| Success Index | 73 Top 25% | 68 Top 25% |
| State rank (type) | #14 of 27 | #48 of 80 |
| National rank (type) | #219 of 1,472 | #1228 of 4,908 |
| Sector | Government | Catholic |
| Type | Secondary | Primary |
| Year range | 7-10 | K-6 |
| Students | 846 | 325 |
| Girls / boys | 384 / 462 | 165 / 160 |
| Foundation intake | – | 49 |
| Year 7 cohort | 219 | – |
| Year 12 cohort | – | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +12% | +7% |
| ICSEA Average 1000 | 1085 | 1082 |
| ICSEA percentile | 80th | 79th |
| Top SEA quarter | 39% | 32% |
| Bottom SEA quarter | 12% | 7% |
| Students per teacher | 13.7 | 16.5 |
| Teaching staff (FTE) | 61.9 | 19.7 |
| Non-teaching staff (FTE) | 26.7 | 9.5 |
| Language background other than English | 19% | 12% |
| Indigenous students | 5% | 3% |
| Suburb | Waramanga 2611 | Kambah 2902 |
| Council area | Unincorporated ACT | Unincorporated ACT |
| Remoteness | Major Cities | Major Cities |
| Website | www.mountstromlohs.act.edu.au | www.sttap.act.edu.au |
The verdict
- •Mount Stromlo High School scores higher on the Success Index (72.6 vs 67.8).
- •Mount Stromlo High School has the higher ICSEA (1085 vs 1082), indicating a more advantaged community.
- •Mount Stromlo High School has fewer students per teacher (13.7 vs 16.5).
- •Mount Stromlo High School is the larger school with 846 students compared with 325.
- •Mount Stromlo High School has grown faster over five years (12% vs 7%).
- •Mount Stromlo High School is a government school while St Thomas the Apostle Primary School 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 Mount Stromlo High School better than St Thomas the Apostle Primary School?
On the Success Index, Mount Stromlo High School ranks higher (72.6 vs 67.8 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 Mount Stromlo High School and St Thomas the Apostle Primary School?
About 2.9 km in a straight line, between Waramanga and Kambah in Australian Capital Territory.
Which has the better student-to-teacher ratio?
Mount Stromlo High School has 13.7 students per full-time-equivalent teacher and St Thomas the Apostle Primary School has 16.5.
How do Mount Stromlo High School and St Thomas the Apostle Primary School rank in ACT?
Mount Stromlo High School is 14th of 27 and St Thomas the Apostle Primary School is 48th of 80 among secondary schools in Australian Capital Territory on the 2025 Success Index.