CatholicSecondaryYears 7-12· Major Cities
Our Lady of Sion College
Box Hill, VIC 3128 · Victorian Catholic Education Authority
Visit school websiteICSEA
1111
87th percentile nationally
Elite (top decile)Total enrolments
930
Secondary
Student–teacher ratio
12:1
80.2 FTE teachers
Gender mix
100% / 0%
girls / boys
Language background
8%
non-English at home
Socio-educational advantage
Share of students in each national SEA quarter (bottom = most disadvantaged, top = most advantaged).
Bottom: 4%
Lower-mid: 17%
Upper-mid: 38%
Top: 42%
Other schools in Box Hill
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.