Overview
Trinity College Senior is a independent secondary school in Evanston South, South Australia, serving 11-12. The school has 669 enrolled students. Its ICSEA value is 1025 (average). The student-to-teacher ratio is 11.4:1. The school is located in a SEIFA IRSD decile 3 area.
Source: ACARA School Profile 2025 (2025)
Key Facts
SectorIndependent
School TypeSecondary
Year Range11-12
Governing BodyAssociation of Independent Schools of SA
Postcode5116
RemotenessMajor Cities
ACARA ID40939
Student Background
Total Enrolments669
Gender Split339 girls / 330 boys
Indigenous Students2%
Language Background Other Than English21%
English Background79%
Socio-Educational Advantage Distribution
Source: ACARA School Profile (2025)
Enrolment by Year Level
669 students across 2 year levels (2025)
Yr 11340
Yr 12329
Source: ACARA Enrolments by Grade (2025)
Staffing
Teaching Staff68 (58.8 FTE)
Non-Teaching Staff90 (23.8 FTE)
Total Staff158
Student:Teacher Ratio11.4:1
Source: ACARA School Profile (2025)