St Thomas the Apostle School
Updated Oct 2026 · ACARA 2025Blackburn, Victoria 3130 · Whitehorse LGA
#165 of 1,290 primary schools in VIC
#316 of 4,908 nationally
About St Thomas the Apostle School
St Thomas the Apostle School is a catholic primary school located in Blackburn, Victoria (3130), within the Whitehorse local government area. It caters for students from Prep to 6 and in 2025 enrolled 185 students (97 girls and 88 boys). The school is affiliated with Victorian Catholic Education Authority.
St Thomas the Apostle School has an ICSEA value of 1130, indicating very high socio-educational advantage. That places it in the 91st percentile of Australian schools. 51% of students come from the top socio-educational quarter and 3% from the bottom quarter.
The school employs 21 teachers (14.9 full-time equivalent) and 13 non-teaching staff, giving a student-to-teacher ratio of about 12.4 to 1. Enrolments have fallen by 38% over the past five years.
On the Success Index, St Thomas the Apostle School scores 78.2 out of 100, placing it in the top 10% of primary schools nationally and 165th of 1,290 primary schools in VIC (13th of 30 in the Whitehorse area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1130
- Students in the top advantage quarter (15%)51% of students
- Teacher resourcing (students per teacher) (15%)12.4 students per teacher
- Enrolment growth vs local area (5 years) (10%)-38% enrolments since 2020 (area median -9%)
- ICSEA trend (5 years) (10%)+14 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 Thomas the Apostle School's 185 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Thomas the Apostle School have changed over the past decade.
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Schools near St Thomas the Apostle School
Closest schools by straight-line distance, with their Success Index.
Blackburn Primary School
Blackburn · Government primary · Prep-6
440 students · ICSEA 1141 · 715 m away
Blackburn Lake Primary School
Blackburn · Government primary · Prep-6
542 students · ICSEA 1170 · 902 m away
Nunawading Christian College - Secondary
Nunawading · Independent high school · 7-12
261 students · ICSEA 1067 · 1.0 km away
Nunawading Christian College - Primary
Nunawading · Independent primary · Prep-6
343 students · ICSEA 1101 · 1.1 km away
Blackburn High School
Blackburn · Government high school · 7-12
1,289 students · ICSEA 1094 · 1.6 km away
St Luke the Evangelist School
Blackburn South · Catholic primary · Prep-6
137 students · ICSEA 1108 · 1.7 km away
Laburnum Primary School
Blackburn · Government primary · Prep-6
619 students · ICSEA 1159 · 1.7 km away
Box Hill High School
Box Hill · Government high school · 7-12
1,547 students · ICSEA 1123 · 1.8 km away
Old Orchard Primary School
Blackburn North · Government primary · Prep-6
441 students · ICSEA 1127 · 1.8 km away
St Philip's School
Blackburn North · Catholic primary · Prep-6
40 students · ICSEA 1137 · 1.9 km away
Similar schools
Catholic primary schools in VIC with a comparable ICSEA.
St Monica's Primary School
Moonee Ponds · Catholic primary · Prep-6
512 students · ICSEA 1129
St John's School
Heidelberg · Catholic primary · Prep-6
345 students · ICSEA 1129
St James' School
Brighton · Catholic primary · Prep-6
146 students · ICSEA 1133
St Bede's School
Balwyn North · Catholic primary · Prep-6
264 students · ICSEA 1133
St Martin of Tours School
Rosanna · Catholic primary · Prep-6
463 students · ICSEA 1127
Sacred Heart School
Newport · Catholic primary · Prep-6
297 students · ICSEA 1126
Frequently asked questions
Is St Thomas the Apostle School a public or private school?
St Thomas the Apostle School is a Catholic school, which makes it a non-government (private) school affiliated with Victorian Catholic Education Authority.
What year levels does St Thomas the Apostle School offer?
St Thomas the Apostle School offers Prep to 6. It is classified by ACARA as a primary school.
How many students attend St Thomas the Apostle School?
In 2025, St Thomas the Apostle School had 185 enrolled students (97 girls, 88 boys), a change of -38% over five years.
What is the ICSEA of St Thomas the Apostle School?
St Thomas the Apostle School has an ICSEA (Index of Community Socio-Educational Advantage) of 1130. The national average is 1000, so this indicates very high socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does St Thomas the Apostle School rank in VIC?
St Thomas the Apostle School ranks 165th of 1,290 primary schools in Victoria on the Success Index (78.2/100), and 316th of 4,908 nationally.
What is the student-to-teacher ratio at St Thomas the Apostle School?
St Thomas the Apostle School has about 12.4 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Prep at St Thomas the Apostle School each year?
In 2025, St Thomas the Apostle School had 18 students in Prep and 19 in Year 6.
Is St Thomas the Apostle School co-ed?
Yes. St Thomas the Apostle School is a co-educational school enrolling both girls and boys.
What other schools are near St Thomas the Apostle School?
There are 10 other schools within 15 km of St Thomas the Apostle 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 Thomas the Apostle School?
The closest Success Tutoring centre is Success Tutoring Hawthorn, about 11 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.