IndependentCombinedYears K-12· Major Cities

International Grammar School

Ultimo, NSW 2007 · Independent Schools NSW

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ICSEA

1170

98th percentile nationally

Elite (top decile)

Total enrolments

1,224

Combined

Student–teacher ratio

10:1

126.5 FTE teachers

Gender mix

43% / 57%

girls / boys

Language background

26%

non-English at home

Socio-educational advantage

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

Bottom: 2%

Lower-mid: 6%

Upper-mid: 21%

Top: 71%

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Other schools in Ultimo

Westbourne College Sydney

Independent · Secondary

1153

Ultimo Public School

Government · Primary

1088

GOAL College

Independent · Special

1027

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.