CatholicSecondaryYears 7-12· Inner Regional

Trinity College Colac

Colac, VIC 3250 · Victorian Catholic Education Authority

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ICSEA

1015

54th percentile nationally

Above average

Total enrolments

744

Secondary

Student–teacher ratio

11:1

68.6 FTE teachers

Gender mix

51% / 49%

girls / boys

Language background

non-English at home

Socio-educational advantage

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

Bottom: 29%

Lower-mid: 38%

Upper-mid: 23%

Top: 11%

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Other schools in Colac

St Mary's School

Catholic · Primary

1025

Sacred Heart School

Catholic · Primary

1025

Elliminyt Primary School

Government · Primary

996

Colac Secondary College

Government · Secondary

955

Colac South West Primary School

Government · Primary

948

Colac Primary School

Government · Primary

946

Lake Colac School

Government · Special

933

Colac West Primary School

Government · Primary

899

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.