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Independent School

Trinity College Senior

Secondary school in Evanston South, SA

669
Students (2025)
1025
ICSEA?Index of Community Socio-Educational Advantage – measures the socio-educational background of students. Based on parents' occupation, education, and school location. National average is 1000.
11:1
Student:Teacher
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About Trinity College Senior

Trinity College Senior is a independent secondary school located in Evanston South, South Australia. The school offers education for students from 11-12.

With 669 students enrolled in 2025 and an ICSEA score of 1025 (58th percentile), the school serves a community with above-average socio-educational advantage. The student-to-teacher ratio of 11:1 supports quality learning outcomes.

📍 Contact & Location

🎓 School Details

  • Type Independent
  • Level Secondary (11-12)
  • Gender Co-educational
  • Students (2025) 669 enrolled
  • Teaching Staff 68 (58.8 FTE)
  • Non-Teaching Staff 90 (23.8 FTE)
  • ICSEA?Index of Community Socio-Educational Advantage – measures the socio-educational background of students. Based on parents' occupation, education, and school location. National average is 1000. 1025 (58th percentile)
  • Indigenous Students 2%

📊 Student Demographics

Gender
Boys: 330 (49%)
Girls: 339 (51%)
Language Background
LBOTE: 21%?Language Background Other Than English – students who speak a language other than English at home.
English only: 79%
ICSEA Distribution?Index of Community Socio-Educational Advantage – shows the distribution of students across socio-educational quarters. Based on parents' occupation, education, and school location. National average is 1000.
24%
35%
27%
13%
Bottom 24% Lower 35% Upper 27% Top 13%