Our Lady of Sion College
Updated Oct 2026 · ACARA 2025Box Hill, Victoria 3128 · Whitehorse LGA
About Our Lady of Sion College
Our Lady of Sion College is a catholic girls' high school located in Box Hill, Victoria (3128), within the Whitehorse local government area. It caters for students from 7 to 12 and in 2025 enrolled 930 students. The school is affiliated with Victorian Catholic Education Authority.
Our Lady of Sion College has an ICSEA value of 1111, indicating very high socio-educational advantage. That places it in the 87th percentile of Australian schools. 42% of students come from the top socio-educational quarter and 4% from the bottom quarter.
The school employs 92 teachers (80.2 full-time equivalent) and 44 non-teaching staff, giving a student-to-teacher ratio of about 11.6 to 1. Enrolments have fallen by 5% over the past five years.
On the Success Index, Our Lady of Sion College scores 76.0 out of 100, placing it in the top 10% of secondary schools nationally and 63rd of 348 secondary schools in VIC (3rd of 9 in the Whitehorse area).
VCE results (2025)
Published by the Victorian Curriculum and Assessment Authority. Study scores range from 0 to 50 with a state mean of 30; a score of 40 or above is in roughly the top 9% statewide.
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1111
- Students in the top advantage quarter (15%)42% of students
- Teacher resourcing (students per teacher) (15%)11.6 students per teacher
- Enrolment growth vs local area (5 years) (10%)-5% enrolments since 2020 (area median +8%)
- ICSEA trend (5 years) (10%)+7 ICSEA points since 2020
The Success Index summarises the academic environment of a school community using official ACARA data. It is not a measure of teaching quality or student results. Read the methodology.
Student profile
Distribution of students across socio-educational advantage (SEA) quarters, plus community characteristics.
Enrolments by year level
How Our Lady of Sion College's 930 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Our Lady of Sion College have changed over the past decade.
Free academic assessment
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Schools near Our Lady of Sion College
Closest schools by straight-line distance, with their Success Index.
St Francis Xavier's School
Box Hill · Catholic primary · Prep-6
257 students · ICSEA 1105 · 132 m away
Box Hill High School
Box Hill · Government high school · 7-12
1,547 students · ICSEA 1123 · 688 m away
Laburnum Primary School
Blackburn · Government primary · Prep-6
619 students · ICSEA 1159 · 1.2 km away
Berengarra School
Box Hill North · Independent special · 7-12
61 students · ICSEA 1084 · 1.6 km away
Kerrimuir Primary School
Box Hill North · Government primary · Prep-6
572 students · ICSEA 1137 · 1.7 km away
Roberts McCubbin Primary School
Box Hill South · Government primary · Prep-6
303 students · ICSEA 1120 · 1.8 km away
Kingswood College
Box Hill · Independent combined · Prep-12
575 students · ICSEA 1162 · 1.9 km away
Box Hill Senior Secondary College
Mont Albert North · Government high school · 9-12
281 students · ICSEA 1055 · 1.9 km away
Blackburn High School
Blackburn · Government high school · 7-12
1,289 students · ICSEA 1094 · 2.0 km away
Box Hill North Primary School
Box Hill North · Government primary · Prep-6
232 students · ICSEA 1084 · 2.0 km away
Similar schools
Catholic secondary schools in VIC with a comparable ICSEA.
Our Lady of Mercy College
Heidelberg · Catholic high school · 7-12
1,175 students · ICSEA 1111
Santa Maria College
Northcote · Catholic high school · 7-12
779 students · ICSEA 1110
Whitefriars College
Donvale · Catholic high school · 7-12
1,055 students · ICSEA 1112
Avila College
Mount Waverley · Catholic high school · 7-12
1,011 students · ICSEA 1113
St Columba's College
Essendon · Catholic high school · 7-12
1,047 students · ICSEA 1107
Marcellin College
Bulleen · Catholic high school · 7-12
1,131 students · ICSEA 1115
Frequently asked questions
Is Our Lady of Sion College a public or private school?
Our Lady of Sion College is a Catholic school, which makes it a non-government (private) school affiliated with Victorian Catholic Education Authority.
What year levels does Our Lady of Sion College offer?
Our Lady of Sion College offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Our Lady of Sion College?
In 2025, Our Lady of Sion College had 930 enrolled students (930 girls, 0 boys), a change of -5% over five years.
What is the ICSEA of Our Lady of Sion College?
Our Lady of Sion College has an ICSEA (Index of Community Socio-Educational Advantage) of 1111. The national average is 1000, so this indicates very high socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Our Lady of Sion College rank in VIC?
Our Lady of Sion College ranks 63rd of 348 secondary schools in Victoria on the Success Index (76.0/100), and 136th of 1,472 nationally.
What is the student-to-teacher ratio at Our Lady of Sion College?
Our Lady of Sion College has about 11.6 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
What are the VCE results at Our Lady of Sion College?
In 2025, Our Lady of Sion College recorded a median VCE study score of 32 with 13.6% of study scores at 40 or above, from 196 students enrolled in at least one VCE study. Source: VCAA Senior Secondary Completion and Achievement Information.
How big is the Year 7 cohort at Our Lady of Sion College?
In 2025, Our Lady of Sion College had 183 students in Year 7 and 140 in Year 12.
Is Our Lady of Sion College co-ed?
No. Our Lady of Sion College is a girls' school.
What other schools are near Our Lady of Sion College?
There are 10 other schools within 15 km of Our Lady of Sion College in our database. Scroll up to the "Nearby schools" section to compare them by Success Index, ICSEA and enrolments, or use the Compare tool.
Where can I get tutoring near Our Lady of Sion College?
The closest Success Tutoring centre is Success Tutoring Hawthorn, about 8.6 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.