IndependentCombinedYears R-12· Major Cities

Westminster School

Marion, SA 5043 · Association of Independent Schools of SA

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ICSEA

1139

93th percentile nationally

Elite (top decile)

Total enrolments

1,401

Combined

Student–teacher ratio

10:1

133.7 FTE teachers

Gender mix

50% / 50%

girls / boys

Language background

21%

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: 28%

Top: 56%

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Other schools in Marion

Dara School

Independent · Combined

1176

Sunrise Christian School Marion

Independent · Combined

1090

Suneden Specialist School

Independent · Special

1065

Kilparrin Teaching and Assessment School and Services

Government · Special

1035

Marion Primary School

Government · Primary

1032

Ascot Park Primary School

Government · Primary

1025

Hamilton Secondary College

Government · Secondary

994

SA School and Services for Vision Impaired

Government · Special

965

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.