St Mary's School
Updated Oct 2026 · ACARA 2025St Kilda East, Victoria 3183 · Port Phillip LGA
#378 of 1,290 primary schools in VIC
#913 of 4,908 nationally
About St Mary's School
St Mary's School is a catholic primary school located in St Kilda East, Victoria (3183), within the Port Phillip local government area. It caters for students from Prep to 6 and in 2025 enrolled 135 students (71 girls and 64 boys). The school is affiliated with Victorian Catholic Education Authority.
St Mary's School has an ICSEA value of 1111, indicating very high socio-educational advantage. That places it in the 87th percentile of Australian schools. 41% of students come from the top socio-educational quarter and 5% from the bottom quarter.
The school employs 13 teachers (9.9 full-time equivalent) and 6 non-teaching staff, giving a student-to-teacher ratio of about 13.6 to 1. Enrolments have fallen by 44% over the past five years.
On the Success Index, St Mary's School scores 71.1 out of 100, placing it in the top 25% of primary schools nationally and 378th of 1,290 primary schools in VIC (11th of 11 in the Port Phillip area).
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%)41% of students
- Teacher resourcing (students per teacher) (15%)13.6 students per teacher
- Enrolment growth vs local area (5 years) (10%)-44% enrolments since 2020 (area median -15%)
- 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 135 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
Is your child on track at St Mary's School?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Hawthorn
Schools near St Mary's School
Closest schools by straight-line distance, with their Success Index.
St Mary's College Melbourne
St Kilda East · Catholic high school · 7-12
440 students · ICSEA 1093 · 64 m away
Windsor Primary School
Windsor · Government primary · Prep-6
125 students · ICSEA 1049 · 261 m away
St Michael's Grammar School
St Kilda · Independent combined · Prep-12
1,143 students · ICSEA 1180 · 517 m away
Cheder Levi Yitzchok Inc
St Kilda · Independent combined · Prep-10
169 students · ICSEA 1053 · 530 m away
Prahran High School
Windsor · Government high school · 7-12
564 students · ICSEA 1080 · 991 m away
Yeshivah College
St Kilda East · Independent combined · Prep-12
362 students · ICSEA 1073 · 1.0 km away
The King David School
Armadale · Independent combined · Prep-12
592 students · ICSEA 1165 · 1.1 km away
Beth Rivkah Ladies College
St Kilda East · Independent combined · Prep-12
489 students · ICSEA 1086 · 1.2 km away
Our Lady of Lourdes School
Prahran · Catholic primary · Prep-6
162 students · ICSEA 1142 · 1.3 km away
St Kilda Primary School
St Kilda · Government primary · Prep-6
437 students · ICSEA 1126 · 1.4 km away
Similar schools
Catholic primary schools in VIC with a comparable ICSEA.
Our Lady of the Nativity School
Aberfeldie · Catholic primary · Prep-6
364 students · ICSEA 1111
St Joseph's School
Northcote · Catholic primary · Prep-6
190 students · ICSEA 1110
St Ambrose's School
Woodend · Catholic primary · Prep-6
225 students · ICSEA 1109
St Mary's School
Greensborough · Catholic primary · Prep-6
524 students · ICSEA 1109
St Clement of Rome School
Bulleen · Catholic primary · Prep-6
456 students · ICSEA 1109
St Mary's School
Geelong · Catholic primary · Prep-6
214 students · ICSEA 1114
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 135 enrolled students (71 girls, 64 boys), a change of -44% 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 1111. The national average is 1000, so this indicates very high socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does St Mary's School rank in VIC?
St Mary's School ranks 378th of 1,290 primary schools in Victoria on the Success Index (71.1/100), and 913th of 4,908 nationally.
What is the student-to-teacher ratio at St Mary's School?
St Mary's School has about 13.6 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 20 students in Prep and 25 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 Hawthorn, about 4.7 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.