IndependentCombinedYears K-12· Major Cities

Knox Grammar School

Wahroonga, NSW 2076 · Independent Schools NSW

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ICSEA

1187

99th percentile nationally

Elite (top decile)

Total enrolments

3,345

Combined

Student–teacher ratio

11:1

291.6 FTE teachers

Gender mix

2% / 98%

girls / boys

Language background

53%

non-English at home

Socio-educational advantage

Share of students in each national SEA quarter (bottom = most disadvantaged, top = most advantaged).

Bottom: 1%

Lower-mid: 4%

Upper-mid: 18%

Top: 77%

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Other schools in Wahroonga

Abbotsleigh

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Normanhurst Boys High School

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Loreto Normanhurst

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Wahroonga Adventist School

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1161

Prouille Catholic Primary School

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1156

Wahroonga Public School

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1156

Waitara Public School

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1148

Normanhurst Public School

Government · Primary

1139

Source: ACARA My School 2025. ICSEA reflects the socio-educational background of a school's students — not academic results or teaching quality. National average = 1000. See data sources.