Dianella Secondary College vs Y School WA
A head-to-head comparison of two schools in Western Australia, 898 m apart, using official ACARA 2025 data. Best value in each row is highlighted.
Dianella Secondary College
Dianella · Government high school · 7-12
575 students · ICSEA 945
Y School WA
Mirrabooka · Independent special · 10-12
103 students · ICSEA 944
| Measure | Dianella Secondary College Dianella WA | Y School WA Mirrabooka WA |
|---|---|---|
| Success Index | 31 Lower 50% | – Not rated |
| State rank (type) | #101 of 140 | – |
| National rank (type) | #1152 of 1,472 | – |
| Sector | Government | Independent |
| Type | Secondary | Special |
| Year range | 7-12 | 10-12 |
| Students | 575 | 103 |
| Girls / boys | 273 / 302 | 59 / 44 |
| Foundation intake | – | – |
| Year 7 cohort | 135 | – |
| Year 12 cohort | 67 | 36 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +5% | – |
| ICSEA Average 1000 | 945 | 944 |
| ICSEA percentile | 23th | 22th |
| Top SEA quarter | 6% | 11% |
| Bottom SEA quarter | 54% | 45% |
| Students per teacher | 13.8 | 11.3 |
| Teaching staff (FTE) | 41.7 | 9.1 |
| Non-teaching staff (FTE) | 24.1 | 10.2 |
| Language background other than English | 72% | 7% |
| Indigenous students | 6% | 24% |
| Suburb | Dianella 6059 | Mirrabooka 6061 |
| Council area | Stirling | Stirling |
| Remoteness | Major Cities | Major Cities |
| Website | www.det.wa.edu.au/schoolsonline/overview.do?schoolID=4036 | www.ymcawa.org.au/vocational-school |
The verdict
- •Dianella Secondary College has the higher ICSEA (945 vs 944), indicating a more advantaged community.
- •Y School WA has fewer students per teacher (11.3 vs 13.8).
- •Dianella Secondary College is the larger school with 575 students compared with 103.
- •Dianella Secondary College is a government school while Y School WA is an independent 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 Dianella Secondary College better than Y School WA?
The two schools are very close on the Success Index. Differences in sector, size, year range and distance from home will matter more than the score.
How far apart are Dianella Secondary College and Y School WA?
About 898 m in a straight line, between Dianella and Mirrabooka in Western Australia.
Which has the better student-to-teacher ratio?
Dianella Secondary College has 13.8 students per full-time-equivalent teacher and Y School WA has 11.3.
How do Dianella Secondary College and Y School WA rank in WA?
Dianella Secondary College is 101st of 140 and Y School WA is unranked among secondary schools in Western Australia on the 2025 Success Index.