IndependentCombinedYears K-12· Major Cities

Blue Mountains Grammar School

Wentworth Falls, NSW 2782 · Independent Schools NSW

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ICSEA

1140

93th percentile nationally

Elite (top decile)

Total enrolments

512

Combined

Student–teacher ratio

10:1

50.3 FTE teachers

Gender mix

48% / 52%

girls / boys

Language background

17%

non-English at home

Socio-educational advantage

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

Bottom: 3%
Lower-mid: 13%
Upper-mid: 27%
Top: 57%

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.