Independent · Secondary · Evanston South
Trinity College Senior
Trinity College Senior is an independent secondary school in Evanston South, South Australia, teaching year levels 11-12 to 669 students.
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ICSEA reflects the socio-educational background of students at this school - it is an intake measure, not a teaching quality or outcomes ranking. National average is 1000. Range is roughly 500–1300. This school's ICSEA places it above 58% of Australian schools.
Trinity College Senior had 669 students in 2025, compared with 623 in 2016 (up 7%).
Total enrolments as reported to ACARA each August. A year marked "-" was not published for this school. Enrolment counts how many students attend, not how good a school is. Source: ACARA School Profile 2008-2025 (Data Access Program).
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Open Move Planner → Evanston South Get a one-page family report for Gawler - South →Map: © OpenStreetMap contributors. School pin is approximate (ACARA geocoded location).
View all South Australia schools on the map →The suburb: Gawler - South
Figures are for the Gawler - South statistical area (SA2), which contains the school. SA2 boundaries do not always equal suburb boundaries, and childcare services are matched by suburb name. See the full Gawler - South profile →
Nearest schools to Trinity College Senior
Listed nearest first. Distance is a straight line between ACARA school locations, not travel distance, and the order is not a ranking.
To see where Trinity College Senior sits among other suburbs, open the map of South Australia suburbs.
Questions about Trinity College Senior
How many students go to Trinity College Senior?
Trinity College Senior has 669 students enrolled (330 boys and 339 girls), according to the ACARA School Profile 2025.
What year levels does Trinity College Senior teach?
Trinity College Senior teaches year levels 11-12. ACARA lists it as a secondary school.
Is Trinity College Senior a government or non-government school?
Trinity College Senior is an independent school in Evanston South, South Australia.
What does the ICSEA of 1025 at Trinity College Senior mean?
ICSEA, the Index of Community Socio-Educational Advantage, describes the family background of the students enrolled at a school, such as parents' education and occupation. The national average is 1000. Trinity College Senior has an ICSEA of 1025, which places it above 58% of Australian schools. It measures student intake, not teaching quality or results.
How many childcare services are near Trinity College Senior?
20 childcare services are listed on the ACECQA national register for Gawler - South, the statistical area around the school. Services are matched by suburb name.
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Source: ACARA School Profile & School Location 2025 (Data Access Program). VIC, NSW and QLD government catchment zones from DET School Zones 2027, NSW DoE School Intake Zones 2026 and Queensland Department of Education state school catchments 2026 (CC BY 4.0). ICSEA is a socio-educational intake index - it measures student background, not teaching quality or outcomes. Methodology →