Gawler and District College B-12 vs Trinity College South
A head-to-head comparison of two combined schools in South Australia, 1.8 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Gawler and District College B-12
Evanston · Government combined · U, R-12
1,247 students · ICSEA 932
Trinity College South
Evanston South · Independent combined · R-10
957 students · ICSEA 1039
| Measure | Gawler and District College B-12 Evanston SA | Trinity College South Evanston South SA |
|---|---|---|
| Success Index | 21 Lower 50% | 46 Lower 50% |
| State rank (type) | #143 of 145 | #61 of 145 |
| National rank (type) | #1234 of 1,259 | #749 of 1,259 |
| Sector | Government | Independent |
| Type | Combined | Combined |
| Year range | U, R-12 | R-10 |
| Students | 1,247 | 957 |
| Girls / boys | 607 / 640 | 460 / 497 |
| Foundation intake | 61 | 55 |
| Year 7 cohort | 141 | 118 |
| Year 12 cohort | 142 | – |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | -1% | +22% |
| ICSEA Average 1000 | 932 | 1039 |
| ICSEA percentile | 19th | 64th |
| Top SEA quarter | 3% | 17% |
| Bottom SEA quarter | 59% | 19% |
| Students per teacher | 13.8 | 15.5 |
| Teaching staff (FTE) | 90.6 | 61.6 |
| Non-teaching staff (FTE) | 56.4 | 29.2 |
| Language background other than English | 10% | 17% |
| Indigenous students | 12% | 3% |
| Suburb | Evanston 5116 | Evanston South 5116 |
| Council area | Gawler | Gawler |
| Remoteness | Major Cities | Major Cities |
| Website | www.gdc.sa.edu.au | www.trinity.sa.edu.au |
The verdict
- •Trinity College South scores higher on the Success Index (45.7 vs 21.0).
- •Trinity College South has the higher ICSEA (1039 vs 932), indicating a more advantaged community.
- •Gawler and District College B-12 has fewer students per teacher (13.8 vs 15.5).
- •Gawler and District College B-12 is the larger school with 1,247 students compared with 957.
- •Trinity College South has grown faster over five years (22% vs -1%).
- •Gawler and District College B-12 is a government school while Trinity College South 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.
Free academic assessment
Torn between two schools? Start with your child.
Whichever you choose, a free Success Tutoring assessment shows exactly where your child is in English and Maths and how to get ahead before the next school year.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Windsor Gardens
Frequently asked questions
Is Gawler and District College B-12 better than Trinity College South?
On the Success Index, Trinity College South ranks higher (45.7 vs 21.0 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 Gawler and District College B-12 and Trinity College South?
About 1.8 km in a straight line, between Evanston and Evanston South in South Australia.
Which has the better student-to-teacher ratio?
Gawler and District College B-12 has 13.8 students per full-time-equivalent teacher and Trinity College South has 15.5.
How do Gawler and District College B-12 and Trinity College South rank in SA?
Gawler and District College B-12 is 143rd of 145 and Trinity College South is 61st of 145 among combined schools in South Australia on the 2025 Success Index.