GovernmentSecondaryYears 7-12· Major Cities

Sefton High School

Sefton, NSW 2162 · NSW Department of Education

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ICSEA

1033

61th percentile nationally

Above average

Total enrolments

1,121

Secondary

Student–teacher ratio

15:1

76 FTE teachers

Gender mix

48% / 52%

girls / boys

Language background

94%

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: 25%

Upper-mid: 25%

Top: 21%

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Other schools in Sefton

Immaculate Heart of Mary Catholic Primary School

Catholic · Primary

1046

Sefton Infants School

Government · Primary

1027

Salamah College

Independent · Combined

989

Chester Hill Public School

Government · Primary

958

Chester Hill North Public School

Government · Primary

950

Chester Hill High School

Government · Secondary

912

Rowland Hassall School

Government · Special

889

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.