Trinity College South
Updated Oct 2026 · ACARA 2025Evanston South, South Australia 5116 · Gawler LGA
#61 of 145 combined schools in SA
#749 of 1,259 nationally
About Trinity College South
Trinity College South is an independent combined (K–12) school located in Evanston South, South Australia (5116), within the Gawler local government area. It caters for students from R to 10 and in 2025 enrolled 957 students (460 girls and 497 boys). The school is affiliated with Association of Independent Schools of SA.
Trinity College South has an ICSEA value of 1039, indicating a socio-educational profile close to the national average of 1000. That places it in the 64th percentile of Australian schools. 17% of students come from the top socio-educational quarter and 19% from the bottom quarter.
The school employs 76 teachers (61.6 full-time equivalent) and 107 non-teaching staff, giving a student-to-teacher ratio of about 15.5 to 1. Enrolments have grown by 22% over the past five years.
On the Success Index, Trinity College South scores 45.7 out of 100, placing it in the lower 50% of combined schools nationally and 61st of 145 combined schools in SA (1st of 3 in the Gawler area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1039
- Students in the top advantage quarter (15%)17% of students
- Teacher resourcing (students per teacher) (15%)15.5 students per teacher
- Enrolment growth vs local area (5 years) (10%)+22% enrolments since 2020 (area median +6%)
- ICSEA trend (5 years) (10%)-10 ICSEA points since 2020
The Success Index summarises the academic environment of a school community using official ACARA data. It is not a measure of teaching quality or student results. Read the methodology.
Student profile
Distribution of students across socio-educational advantage (SEA) quarters, plus community characteristics.
Enrolments by year level
How Trinity College South's 957 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Trinity College South have changed over the past decade.
Free academic assessment
Is your child on track at Trinity College South?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
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Schools near Trinity College South
Closest schools by straight-line distance, with their Success Index.
Trinity College Senior
Evanston South · Independent high school · 11-12
669 students · ICSEA 1025 · 323 m away
Trinity College North
Evanston South · Independent combined · R-10
914 students · ICSEA 1040 · 334 m away
Evanston Gardens Primary School
Evanston Gardens · Government primary · R-6
263 students · ICSEA 943 · 1.6 km away
Gawler and District College B-12
Evanston · Government combined · U, R-12
1,247 students · ICSEA 932 · 1.8 km away
Gawler Primary School
Gawler · Government primary · R-6
168 students · ICSEA 954 · 4.2 km away
Immanuel Gawler
Gawler East · Independent primary · R-6
353 students · ICSEA 1038 · 4.7 km away
Munno Para Primary School
Munno Para · Government primary · U, R-6
305 students · ICSEA 929 · 4.8 km away
Gawler East Primary School
Gawler East · Government primary · R-6
374 students · ICSEA 987 · 4.9 km away
Adelaide North Special School
Munno Para West · Government special · U
178 students · ICSEA 964 · 5.3 km away
Mark Oliphant College (B-12)
Munno Para West · Government combined · U, R-12
1,685 students · ICSEA 919 · 5.6 km away
Similar schools
Independent combined schools in SA with a comparable ICSEA.
Heritage College Incorporated
Oakden · Independent combined · R-12
437 students · ICSEA 1040
Trinity College North
Evanston South · Independent combined · R-10
914 students · ICSEA 1040
Southern Vales Christian College
Morphett Vale · Independent combined · R-12
503 students · ICSEA 1038
Trinity College Blakeview
Blakeview · Independent combined · R-10
635 students · ICSEA 1037
Prescott College Southern
Morphett Vale · Independent combined · R-12
707 students · ICSEA 1036
Sunrise Christian School Naracoorte
Naracoorte · Independent combined · R-9
109 students · ICSEA 1032
Frequently asked questions
Is Trinity College South a public or private school?
Trinity College South is a Independent school, which makes it a non-government (private) school affiliated with Association of Independent Schools of SA.
What year levels does Trinity College South offer?
Trinity College South offers R to 10. It is classified by ACARA as a combined school.
How many students attend Trinity College South?
In 2025, Trinity College South had 957 enrolled students (460 girls, 497 boys), a change of 22% over five years.
What is the ICSEA of Trinity College South?
Trinity College South has an ICSEA (Index of Community Socio-Educational Advantage) of 1039. The national average is 1000, so this indicates a socio-educational profile close to the national average of 1000. ICSEA reflects the school community, not teaching quality.
How does Trinity College South rank in SA?
Trinity College South ranks 61st of 145 combined schools in South Australia on the Success Index (45.7/100), and 749th of 1,259 nationally.
What is the student-to-teacher ratio at Trinity College South?
Trinity College South has about 15.5 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Trinity College South?
In 2025, Trinity College South had 118 students in Year 7.
Is Trinity College South co-ed?
Yes. Trinity College South is a co-educational school enrolling both girls and boys.
What other schools are near Trinity College South?
There are 10 other schools within 15 km of Trinity College South in our database. Scroll up to the "Nearby schools" section to compare them by Success Index, ICSEA and enrolments, or use the Compare tool.
Where can I get tutoring near Trinity College South?
The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 27 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.