GovernmentSecondaryYears 7-12· Major Cities

Marrickville High School

Marrickville, NSW 2204 · NSW Department of Education

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ICSEA

1052

69th percentile nationally

Top tier

Total enrolments

625

Secondary

Student–teacher ratio

9:1

67.9 FTE teachers

Gender mix

38% / 62%

girls / boys

Language background

42%

non-English at home

Socio-educational advantage

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

Bottom: 19%
Lower-mid: 23%
Upper-mid: 30%
Top: 28%

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.