Lake Illawarra High School vs Oak Flats High School
A head-to-head comparison of two secondary schools in New South Wales, 2.5 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Lake Illawarra High School
Lake Illawarra · Government high school · 7-12
542 students · ICSEA 894
Oak Flats High School
Oak Flats · Government high school · 7-12
648 students · ICSEA 932
| Measure | Lake Illawarra High School Lake Illawarra NSW | Oak Flats High School Oak Flats NSW |
|---|---|---|
| Success Index | 25 Lower 50% | 33 Lower 50% |
| State rank (type) | #480 of 539 | #400 of 539 |
| National rank (type) | #1317 of 1,472 | #1105 of 1,472 |
| Sector | Government | Government |
| Type | Secondary | Secondary |
| Year range | 7-12 | 7-12 |
| Students | 542 | 648 |
| Girls / boys | 260 / 282 | 308 / 340 |
| Foundation intake | – | – |
| Year 7 cohort | 87 | 113 |
| Year 12 cohort | 53 | 65 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +2% | -1% |
| ICSEA Average 1000 | 894 | 932 |
| ICSEA percentile | 10th | 19th |
| Top SEA quarter | 2% | 2% |
| Bottom SEA quarter | 67% | 56% |
| Students per teacher | 10.1 | 9.9 |
| Teaching staff (FTE) | 53.6 | 65.5 |
| Non-teaching staff (FTE) | 17.7 | 18.9 |
| Language background other than English | 10% | 9% |
| Indigenous students | 23% | 14% |
| Suburb | Lake Illawarra 2528 | Oak Flats 2529 |
| Council area | Shellharbour | Shellharbour |
| Remoteness | Major Cities | Major Cities |
| Website | lakeillawa-h.schools.nsw.gov.au | oakflats-h.schools.nsw.gov.au |
The verdict
- •Oak Flats High School scores higher on the Success Index (33.3 vs 24.8).
- •Oak Flats High School has the higher ICSEA (932 vs 894), indicating a more advantaged community.
- •Oak Flats High School is the larger school with 648 students compared with 542.
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 Lake Illawarra High School better than Oak Flats High School?
On the Success Index, Oak Flats High School ranks higher (33.3 vs 24.8 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 Lake Illawarra High School and Oak Flats High School?
About 2.5 km in a straight line, between Lake Illawarra and Oak Flats in New South Wales.
Which has the better student-to-teacher ratio?
Lake Illawarra High School has 10.1 students per full-time-equivalent teacher and Oak Flats High School has 9.9.
How do Lake Illawarra High School and Oak Flats High School rank in NSW?
Lake Illawarra High School is 480th of 539 and Oak Flats High School is 400th of 539 among secondary schools in New South Wales on the 2025 Success Index.