IndependentCombinedYears K-12· Major Cities

The Hills Grammar School

Kenthurst, NSW 2156 · Independent Schools NSW

Visit school website

ICSEA

1164

97th percentile nationally

Elite (top decile)

Total enrolments

1,208

Combined

Student–teacher ratio

11:1

108 FTE teachers

Gender mix

43% / 57%

girls / boys

Language background

66%

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: 26%
Top: 66%

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.