Seaford Secondary College vs Willunga High School
A head-to-head comparison of two secondary schools in South Australia, 11 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Seaford Secondary College
Seaford · Government high school · U, 7-12
829 students · ICSEA 962
Willunga High School
Willunga · Government high school · U, 7-12
693 students · ICSEA 994
| Measure | Seaford Secondary College Seaford SA | Willunga High School Willunga SA |
|---|---|---|
| Success Index | 33 Lower 50% | 40 Lower 50% |
| State rank (type) | #61 of 84 | #52 of 84 |
| National rank (type) | #1107 of 1,472 | #950 of 1,472 |
| Sector | Government | Government |
| Type | Secondary | Secondary |
| Year range | U, 7-12 | U, 7-12 |
| Students | 829 | 693 |
| Girls / boys | 388 / 441 | 359 / 334 |
| Foundation intake | – | – |
| Year 7 cohort | 106 | 128 |
| Year 12 cohort | 104 | 110 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +1% | -30% |
| ICSEA Average 1000 | 962 | 994 |
| ICSEA percentile | 30th | 44th |
| Top SEA quarter | 5% | 9% |
| Bottom SEA quarter | 50% | 37% |
| Students per teacher | 13.3 | 14.6 |
| Teaching staff (FTE) | 62.5 | 46.8 |
| Non-teaching staff (FTE) | 39.1 | 25.5 |
| Language background other than English | 9% | 2% |
| Indigenous students | 7% | 4% |
| Suburb | Seaford 5169 | Willunga 5172 |
| Council area | Onkaparinga | Onkaparinga |
| Remoteness | Major Cities | Major Cities |
| Website | www.seafordhs.sa.edu.au | www.whs.sa.edu.au |
The verdict
- •Willunga High School scores higher on the Success Index (40.0 vs 33.3).
- •Willunga High School has the higher ICSEA (994 vs 962), indicating a more advantaged community.
- •Seaford Secondary College has fewer students per teacher (13.3 vs 14.6).
- •Seaford Secondary College is the larger school with 829 students compared with 693.
- •Seaford Secondary College has grown faster over five years (1% vs -30%).
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 Seaford Secondary College better than Willunga High School?
On the Success Index, Willunga High School ranks higher (40.0 vs 33.3 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 Seaford Secondary College and Willunga High School?
About 11 km in a straight line, between Seaford and Willunga in South Australia.
Which has the better student-to-teacher ratio?
Seaford Secondary College has 13.3 students per full-time-equivalent teacher and Willunga High School has 14.6.
How do Seaford Secondary College and Willunga High School rank in SA?
Seaford Secondary College is 61st of 84 and Willunga High School is 52nd of 84 among secondary schools in South Australia on the 2025 Success Index.