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Independent School

Trinity Grammar School

Combined school in Summer Hill, NSW

2,296
Students (2025)
1168
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.
9:1
Student:Teacher
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About Trinity Grammar School

Trinity Grammar School is a independent combined school located in Summer Hill, Sydney's North Shore. The school offers education for students from K-12.

With 2296 students enrolled in 2025 and an ICSEA score of 1168 (98th percentile), the school serves a community with above-average socio-educational advantage. The student-to-teacher ratio of 9:1 supports quality learning outcomes.

📍 Contact & Location

🎓 School Details

  • Type Independent
  • Level Combined (K-12)
  • Gender Boys only
  • Students (2025) 2,296 enrolled
  • Teaching Staff 266 (254.7 FTE)
  • Non-Teaching Staff 188 (146.7 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. 1168 (98th percentile)
  • Indigenous Students 0%

📊 Student Demographics

Gender
Boys: 2296 (100%)
Language Background
LBOTE: 61%?Language Background Other Than English – students who speak a language other than English at home.
English only: 39%
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.
7%
24%
67%
Bottom 1% Lower 7% Upper 24% Top 67%