Old Noarlunga Primary School vs Seaford Secondary College
A head-to-head comparison of two schools in South Australia, 1.7 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Old Noarlunga Primary School
Old Noarlunga · Government primary · R-6
155 students · ICSEA 999
Seaford Secondary College
Seaford · Government high school · U, 7-12
829 students · ICSEA 962
| Measure | Old Noarlunga Primary School Old Noarlunga SA | Seaford Secondary College Seaford SA |
|---|---|---|
| Success Index | 46 Lower 50% | 33 Lower 50% |
| State rank (type) | #197 of 348 | #61 of 84 |
| National rank (type) | #2974 of 4,908 | #1107 of 1,472 |
| Sector | Government | Government |
| Type | Primary | Secondary |
| Year range | R-6 | U, 7-12 |
| Students | 155 | 829 |
| Girls / boys | 64 / 91 | 388 / 441 |
| Foundation intake | 25 | – |
| Year 7 cohort | – | 106 |
| Year 12 cohort | – | 104 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +2% | +1% |
| ICSEA Average 1000 | 999 | 962 |
| ICSEA percentile | 46th | 30th |
| Top SEA quarter | 7% | 5% |
| Bottom SEA quarter | 29% | 50% |
| Students per teacher | 15.5 | 13.3 |
| Teaching staff (FTE) | 10.0 | 62.5 |
| Non-teaching staff (FTE) | 6.2 | 39.1 |
| Language background other than English | 3% | 9% |
| Indigenous students | 8% | 7% |
| Suburb | Old Noarlunga 5168 | Seaford 5169 |
| Council area | Onkaparinga | Onkaparinga |
| Remoteness | Major Cities | Major Cities |
| Website | www.onps.sa.edu.au | www.seafordhs.sa.edu.au |
The verdict
- •Old Noarlunga Primary School scores higher on the Success Index (46.3 vs 33.3).
- •Old Noarlunga Primary School has the higher ICSEA (999 vs 962), indicating a more advantaged community.
- •Seaford Secondary College has fewer students per teacher (13.3 vs 15.5).
- •Seaford Secondary College is the larger school with 829 students compared with 155.
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 Old Noarlunga Primary School better than Seaford Secondary College?
On the Success Index, Old Noarlunga Primary School ranks higher (46.3 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 Old Noarlunga Primary School and Seaford Secondary College?
About 1.7 km in a straight line, between Old Noarlunga and Seaford in South Australia.
Which has the better student-to-teacher ratio?
Old Noarlunga Primary School has 15.5 students per full-time-equivalent teacher and Seaford Secondary College has 13.3.
How do Old Noarlunga Primary School and Seaford Secondary College rank in SA?
Old Noarlunga Primary School is 197th of 348 and Seaford Secondary College is 61st of 84 among primary schools in South Australia on the 2025 Success Index.