St Thomas' Catholic Primary School
Updated Oct 2026 · ACARA 2025Willoughby, New South Wales 2068 · Willoughby LGA
#136 of 1,619 primary schools in NSW
#531 of 4,908 nationally
About St Thomas' Catholic Primary School
St Thomas' Catholic Primary School is a catholic primary school located in Willoughby, New South Wales (2068), within the Willoughby local government area. It caters for students from K to 6 and in 2025 enrolled 277 students (144 girls and 133 boys). The school is affiliated with Catholic Schools NSW.
St Thomas' Catholic Primary School has an ICSEA value of 1161, indicating exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. That places it in the 97th percentile of Australian schools. 65% of students come from the top socio-educational quarter and 0% from the bottom quarter.
The school employs 22 teachers (18.1 full-time equivalent) and 7 non-teaching staff, giving a student-to-teacher ratio of about 15.3 to 1. Enrolments have fallen by 23% over the past five years.
On the Success Index, St Thomas' Catholic Primary School scores 75.1 out of 100, placing it in the top 10% of primary schools nationally and 136th of 1,619 primary schools in NSW (3rd of 10 in the Willoughby area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1161
- Students in the top advantage quarter (15%)65% of students
- Teacher resourcing (students per teacher) (15%)15.3 students per teacher
- Enrolment growth vs local area (5 years) (10%)-23% enrolments since 2020 (area median -18%)
- ICSEA trend (5 years) (10%)-10 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' Catholic Primary School's 277 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Thomas' Catholic Primary School have changed over the past decade.
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Schools near St Thomas' Catholic Primary School
Closest schools by straight-line distance, with their Success Index.
Willoughby Public School
Willoughby · Government primary · K-6
905 students · ICSEA 1143 · 691 m away
Willoughby Girls High School
Willoughby · Government high school · 7-12
1,036 students · ICSEA 1152 · 795 m away
Glenaeon Rudolf Steiner School
Middle Cove · Independent combined · K-12
405 students · ICSEA 1148 · 931 m away
Castle Cove Public School
Castle Cove · Government primary · K-6
273 students · ICSEA 1167 · 1.4 km away
Mercy Catholic College
Chatswood · Catholic high school · 7-12
728 students · ICSEA 1134 · 1.4 km away
Our Lady of Dolours Catholic Primary School
Chatswood · Catholic primary · K-6
355 students · ICSEA 1144 · 1.5 km away
St Pius X College
Chatswood · Independent combined · 5-12
1,183 students · ICSEA 1144 · 1.6 km away
Roseville Public School
Roseville · Government primary · K-6
520 students · ICSEA 1172 · 1.9 km away
Chatswood Public School
Chatswood · Government primary · K-6
1,083 students · ICSEA 1143 · 2.1 km away
Artarmon Public School
Artarmon · Government primary · K-6
1,063 students · ICSEA 1167 · 2.1 km away
Similar schools
Catholic primary schools in NSW with a comparable ICSEA.
St Charles' Catholic Primary School Waverley
Waverley · Catholic primary · K-6
308 students · ICSEA 1161
Galilee Catholic Primary School
Bondi Beach · Catholic primary · K-6
88 students · ICSEA 1160
Our Lady of the Sacred Heart Catholic Primary School
Randwick · Catholic primary · K-6
472 students · ICSEA 1160
St Michael's Catholic Primary School
Stanmore · Catholic primary · K-6
116 students · ICSEA 1160
St Mary's Catholic Primary School
Manly · Catholic primary · K-6
330 students · ICSEA 1159
St Brigid's Catholic Primary School
Coogee · Catholic primary · K-6
205 students · ICSEA 1159
Frequently asked questions
Is St Thomas' Catholic Primary School a public or private school?
St Thomas' Catholic Primary School is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Schools NSW.
What year levels does St Thomas' Catholic Primary School offer?
St Thomas' Catholic Primary School offers K to 6. It is classified by ACARA as a primary school.
How many students attend St Thomas' Catholic Primary School?
In 2025, St Thomas' Catholic Primary School had 277 enrolled students (144 girls, 133 boys), a change of -23% over five years.
What is the ICSEA of St Thomas' Catholic Primary School?
St Thomas' Catholic Primary School has an ICSEA (Index of Community Socio-Educational Advantage) of 1161. The national average is 1000, so this indicates exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. ICSEA reflects the school community, not teaching quality.
How does St Thomas' Catholic Primary School rank in NSW?
St Thomas' Catholic Primary School ranks 136th of 1,619 primary schools in New South Wales on the Success Index (75.1/100), and 531st of 4,908 nationally.
What is the student-to-teacher ratio at St Thomas' Catholic Primary School?
St Thomas' Catholic Primary School has about 15.3 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Kindergarten at St Thomas' Catholic Primary School each year?
In 2025, St Thomas' Catholic Primary School had 38 students in Kindergarten and 14 in Year 6.
Is St Thomas' Catholic Primary School co-ed?
Yes. St Thomas' Catholic Primary School is a co-educational school enrolling both girls and boys.
What other schools are near St Thomas' Catholic Primary School?
There are 10 other schools within 15 km of St Thomas' Catholic Primary 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' Catholic Primary School?
The closest Success Tutoring centre is Success Tutoring Chatswood, about 1.8 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.