Holy Trinity School
Updated Oct 2026 · ACARA 2025Wantirna South, Victoria 3152 · Knox LGA
#427 of 1,290 primary schools in VIC
#1075 of 4,908 nationally
About Holy Trinity School
Holy Trinity School is a catholic primary school located in Wantirna South, Victoria (3152), within the Knox local government area. It caters for students from Prep to 6 and in 2025 enrolled 210 students (99 girls and 111 boys). The school is affiliated with Victorian Catholic Education Authority.
Holy Trinity School has an ICSEA value of 1083, indicating above-average socio-educational advantage. That places it in the 79th percentile of Australian schools. 31% of students come from the top socio-educational quarter and 10% from the bottom quarter.
The school employs 19 teachers (16.3 full-time equivalent) and 12 non-teaching staff, giving a student-to-teacher ratio of about 12.9 to 1. Enrolments have fallen by 30% over the past five years.
On the Success Index, Holy Trinity School scores 69.3 out of 100, placing it in the top 25% of primary schools nationally and 427th of 1,290 primary schools in VIC (13th of 30 in the Knox area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1083
- Students in the top advantage quarter (15%)31% of students
- Teacher resourcing (students per teacher) (15%)12.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)-30% enrolments since 2020 (area median -8%)
- ICSEA trend (5 years) (10%)+9 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 Holy Trinity School's 210 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Holy Trinity School have changed over the past decade.
Free academic assessment
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Schools near Holy Trinity School
Closest schools by straight-line distance, with their Success Index.
St Mary's College for the Deaf
Wantirna South · Catholic special · U
75 students · ICSEA 1028 · 49 m away
St Andrews Christian College
Wantirna South · Independent combined · Prep-12
719 students · ICSEA 1166 · 383 m away
Wantirna South Primary School
Wantirna South · Government primary · Prep-6
233 students · ICSEA 1074 · 735 m away
Knox Park Primary School
Knoxfield · Government primary · Prep-6
312 students · ICSEA 1061 · 1.0 km away
Knox Gardens Primary School
Wantirna South · Government primary · Prep-6
458 students · ICSEA 1112 · 1.3 km away
Scoresby Secondary College
Scoresby · Government high school · 7-12
244 students · ICSEA 1003 · 1.4 km away
Fairhills High School
Knoxfield · Government high school · 7-12
404 students · ICSEA 994 · 1.4 km away
Darrang Primary School
Knoxfield · Government primary · Prep-6
64 students · ICSEA 974 · 1.7 km away
Kent Park Primary School
Ferntree Gully · Government primary · Prep-6
197 students · ICSEA 1012 · 1.9 km away
St Jude the Apostle School
Scoresby · Catholic primary · Prep-6
271 students · ICSEA 1083 · 2.0 km away
Similar schools
Catholic primary schools in VIC with a comparable ICSEA.
St Catherine's School
Moorabbin · Catholic primary · Prep-6
85 students · ICSEA 1083
St Christopher's School
Airport West · Catholic primary · Prep-6
727 students · ICSEA 1083
St Jude the Apostle School
Scoresby · Catholic primary · Prep-6
271 students · ICSEA 1083
St Mark's School
Dingley Village · Catholic primary · Prep-6
421 students · ICSEA 1083
St Joseph's School
Chelsea · Catholic primary · Prep-6
317 students · ICSEA 1084
St Peter's School
Clayton · Catholic primary · Prep-6
133 students · ICSEA 1082
Frequently asked questions
Is Holy Trinity School a public or private school?
Holy Trinity School is a Catholic school, which makes it a non-government (private) school affiliated with Victorian Catholic Education Authority.
What year levels does Holy Trinity School offer?
Holy Trinity School offers Prep to 6. It is classified by ACARA as a primary school.
How many students attend Holy Trinity School?
In 2025, Holy Trinity School had 210 enrolled students (99 girls, 111 boys), a change of -30% over five years.
What is the ICSEA of Holy Trinity School?
Holy Trinity School has an ICSEA (Index of Community Socio-Educational Advantage) of 1083. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Holy Trinity School rank in VIC?
Holy Trinity School ranks 427th of 1,290 primary schools in Victoria on the Success Index (69.3/100), and 1075th of 4,908 nationally.
What is the student-to-teacher ratio at Holy Trinity School?
Holy Trinity School has about 12.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Prep at Holy Trinity School each year?
In 2025, Holy Trinity School had 24 students in Prep and 38 in Year 6.
Is Holy Trinity School co-ed?
Yes. Holy Trinity School is a co-educational school enrolling both girls and boys.
What other schools are near Holy Trinity School?
There are 10 other schools within 15 km of Holy Trinity 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 Holy Trinity School?
The closest Success Tutoring centre is Success Tutoring Springvale, 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.