CatholicPrimaryYears Prep-6· Major Cities

Holy Trinity Catholic Primary School

Sunbury, VIC 3429 · Victorian Catholic Education Authority

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ICSEA

1065

74th percentile nationally

Top tier

Total enrolments

431

Primary

Student–teacher ratio

15:1

29.5 FTE teachers

Gender mix

50% / 50%

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: 13%

Lower-mid: 29%

Upper-mid: 34%

Top: 24%

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Other schools in Sunbury

Our Lady of Mount Carmel School

Catholic · Primary

1061

Salesian College Sunbury

Catholic · Secondary

1059

St Anne's School

Catholic · Primary

1059

Red Rock Christian College

Independent · Combined

1056

Sunbury Primary School

Government · Primary

1056

Kismet Park Primary School

Government · Primary

1023

Killara Primary School

Government · Primary

1017

Sunbury Downs Secondary College

Government · Secondary

1005

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.