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Independent School

Knox Grammar School

Combined school in Wahroonga, NSW

3,345
Students (2025)
1187
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 Knox Grammar School

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

With 3345 students enrolled in 2025 and an ICSEA score of 1187 (99th 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 Combined (K-12)
  • Gender Co-educational
  • Students (2025) 3,345 enrolled
  • Teaching Staff 307 (291.6 FTE)
  • Non-Teaching Staff 426 (262.6 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. 1187 (99th percentile)
  • Indigenous Students 1%

📊 Student Demographics

Gender
Boys: 3272 (98%)
Girls: 73 (2%)
Language Background
LBOTE: 53%?Language Background Other Than English – students who speak a language other than English at home.
English only: 25%
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.
18%
77%
Bottom 1% Lower 4% Upper 18% Top 77%