IndependentCombinedYears K-12· Major Cities

Trinity Grammar School

Summer Hill, NSW 2130 · Independent Schools NSW

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ICSEA

1168

98th percentile nationally

Elite (top decile)

Total enrolments

2,296

Combined

Student–teacher ratio

9:1

254.7 FTE teachers

Gender mix

0% / 100%

girls / boys

Language background

61%

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: 7%

Upper-mid: 24%

Top: 67%

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Other schools in Summer Hill

Summer Hill Public School

Government · Primary

1167

St Patrick's Catholic Primary School

Catholic · Primary

1136

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.