St Mary's School
Updated Oct 2026 · ACARA 2025Whittlesea, Victoria 3757 · Whittlesea LGA
#780 of 1,290 primary schools in VIC
#2337 of 4,908 nationally
About St Mary's School
St Mary's School is a catholic primary school located in Whittlesea, Victoria (3757), within the Whittlesea local government area. It caters for students from Prep to 6 and in 2025 enrolled 262 students (133 girls and 129 boys). The school is affiliated with Victorian Catholic Education Authority.
St Mary's School has an ICSEA value of 1032, indicating a socio-educational profile close to the national average of 1000. That places it in the 61st percentile of Australian schools. 12% of students come from the top socio-educational quarter and 22% from the bottom quarter.
The school employs 20 teachers (17.9 full-time equivalent) and 15 non-teaching staff, giving a student-to-teacher ratio of about 14.6 to 1. Enrolments have fallen by 14% over the past five years.
On the Success Index, St Mary's School scores 54.9 out of 100, placing it in the top 50% of primary schools nationally and 780th of 1,290 primary schools in VIC (26th of 41 in the Whittlesea area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1032
- Students in the top advantage quarter (15%)12% of students
- Teacher resourcing (students per teacher) (15%)14.6 students per teacher
- Enrolment growth vs local area (5 years) (10%)-14% enrolments since 2020 (area median -5%)
- ICSEA trend (5 years) (10%)+16 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 St Mary's School's 262 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Mary's School have changed over the past decade.
Free academic assessment
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Schools near St Mary's School
Closest schools by straight-line distance, with their Success Index.
Whittlesea Primary School
Whittlesea · Government primary · Prep-6
395 students · ICSEA 977 · 580 m away
Whittlesea Secondary College
Whittlesea · Government high school · 7-12
723 students · ICSEA 967 · 831 m away
Laurimar Primary School
Doreen · Government primary · Prep-6
968 students · ICSEA 1027 · 8.6 km away
Mernda Primary School
Mernda · Government primary · Prep-6
844 students · ICSEA 1035 · 9.7 km away
St Paul the Apostle Catholic Primary School
Doreen · Catholic primary · Prep-6
454 students · ICSEA 1080 · 9.8 km away
St Joseph's School
Mernda · Catholic primary · Prep-6
497 students · ICSEA 1094 · 9.9 km away
Hazel Glen College
Doreen · Government combined · Prep-12
2,141 students · ICSEA 1023 · 9.9 km away
Mernda Hills Christian College
Mernda · Independent combined · Prep-12
359 students · ICSEA 1119 · 11 km away
Upper Plenty Primary School
Upper Plenty · Government primary · Prep-6
202 students · ICSEA 987 · 11 km away
Donnybrook Primary School
Donnybrook · Government primary · Prep-6
502 students · ICSEA 1036 · 11 km away
Similar schools
Catholic primary schools in VIC with a comparable ICSEA.
St Monica's School
Kangaroo Flat · Catholic primary · Prep-6
284 students · ICSEA 1032
St Mary's School
Castlemaine · Catholic primary · Prep-6
64 students · ICSEA 1033
St Joseph's School
Wonthaggi · Catholic primary · Prep-6
315 students · ICSEA 1031
St James School
Nar Nar Goon · Catholic primary · Prep-6
98 students · ICSEA 1031
St John's School
Euroa · Catholic primary · Prep-6
199 students · ICSEA 1033
St Joseph's School
Nagambie · Catholic primary · Prep-6
52 students · ICSEA 1034
Frequently asked questions
Is St Mary's School a public or private school?
St Mary's School is a Catholic school, which makes it a non-government (private) school affiliated with Victorian Catholic Education Authority.
What year levels does St Mary's School offer?
St Mary's School offers Prep to 6. It is classified by ACARA as a primary school.
How many students attend St Mary's School?
In 2025, St Mary's School had 262 enrolled students (133 girls, 129 boys), a change of -14% over five years.
What is the ICSEA of St Mary's School?
St Mary's School has an ICSEA (Index of Community Socio-Educational Advantage) of 1032. The national average is 1000, so this indicates a socio-educational profile close to the national average of 1000. ICSEA reflects the school community, not teaching quality.
How does St Mary's School rank in VIC?
St Mary's School ranks 780th of 1,290 primary schools in Victoria on the Success Index (54.9/100), and 2337th of 4,908 nationally.
What is the student-to-teacher ratio at St Mary's School?
St Mary's School has about 14.6 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Prep at St Mary's School each year?
In 2025, St Mary's School had 51 students in Prep and 37 in Year 6.
Is St Mary's School co-ed?
Yes. St Mary's School is a co-educational school enrolling both girls and boys.
What other schools are near St Mary's School?
There are 10 other schools within 15 km of St Mary's School 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 St Mary's School?
The closest Success Tutoring centre is Success Tutoring Craigieburn, about 20 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.