IndependentCombinedYears K-12· Major Cities

St Andrew's Cathedral School

Sydney, NSW 2000 · Independent Schools NSW

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ICSEA

1189

99th percentile nationally

Elite (top decile)

Total enrolments

1,436

Combined

Student–teacher ratio

9:1

153.7 FTE teachers

Gender mix

41% / 59%

girls / boys

Language background

30%

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: 19%

Top: 76%

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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.