Erindale College vs St Mary MacKillop College
A head-to-head comparison of two secondary schools in Australian Capital Territory, 2.5 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Erindale College
Wanniassa · Government high school · 10-12
871 students · ICSEA 1041
St Mary MacKillop College
Isabella Plains · Catholic high school · 7-12
2,088 students · ICSEA 1068
| Measure | Erindale College Wanniassa ACT | St Mary MacKillop College Isabella Plains ACT |
|---|---|---|
| Success Index | 65 Top 50% | 68 Top 25% |
| State rank (type) | #23 of 27 | #20 of 27 |
| National rank (type) | #406 of 1,472 | #338 of 1,472 |
| Sector | Government | Catholic |
| Type | Secondary | Secondary |
| Year range | 10-12 | 7-12 |
| Students | 871 | 2,088 |
| Girls / boys | 413 / 458 | 1,112 / 976 |
| Foundation intake | – | – |
| Year 7 cohort | – | 359 |
| Year 12 cohort | 358 | 306 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +39% | +13% |
| ICSEA Average 1000 | 1041 | 1068 |
| ICSEA percentile | 65th | 75th |
| Top SEA quarter | 21% | 27% |
| Bottom SEA quarter | 18% | 10% |
| Students per teacher | 14.0 | 13.8 |
| Teaching staff (FTE) | 60.1 | 150.9 |
| Non-teaching staff (FTE) | 23.8 | 61.0 |
| Language background other than English | 12% | 8% |
| Indigenous students | 6% | 4% |
| Suburb | Wanniassa 2903 | Isabella Plains 2905 |
| Council area | Unincorporated ACT | Unincorporated ACT |
| Remoteness | Major Cities | Major Cities |
| Website | www.erindalec.act.edu.au/ | www.mackillop.act.edu.au |
The verdict
- •St Mary MacKillop College scores higher on the Success Index (67.7 vs 64.9).
- •St Mary MacKillop College has the higher ICSEA (1068 vs 1041), indicating a more advantaged community.
- •St Mary MacKillop College is the larger school with 2,088 students compared with 871.
- •Erindale College has grown faster over five years (39% vs 13%).
- •Erindale College is a government school while St Mary MacKillop 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 Erindale College better than St Mary MacKillop College?
On the Success Index, St Mary MacKillop College ranks higher (67.7 vs 64.9 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 Erindale College and St Mary MacKillop College?
About 2.5 km in a straight line, between Wanniassa and Isabella Plains in Australian Capital Territory.
Which has the better student-to-teacher ratio?
Erindale College has 14.0 students per full-time-equivalent teacher and St Mary MacKillop College has 13.8.
How do Erindale College and St Mary MacKillop College rank in ACT?
Erindale College is 23rd of 27 and St Mary MacKillop College is 20th of 27 among secondary schools in Australian Capital Territory on the 2025 Success Index.