St Mary's Primary School
Updated Oct 2026 · ACARA 2025Rydalmere, New South Wales 2116 · Parramatta LGA
#490 of 1,619 primary schools in NSW
#1491 of 4,908 nationally
About St Mary's Primary School
St Mary's Primary School is a catholic primary school located in Rydalmere, New South Wales (2116), within the Parramatta local government area. It caters for students from K to 6 and in 2025 enrolled 377 students (189 girls and 188 boys). The school is affiliated with Catholic Schools NSW.
St Mary's Primary School has an ICSEA value of 1079, indicating above-average socio-educational advantage. That places it in the 78th percentile of Australian schools. 35% of students come from the top socio-educational quarter and 11% from the bottom quarter.
The school employs 28 teachers (21.9 full-time equivalent) and 10 non-teaching staff, giving a student-to-teacher ratio of about 17.2 to 1. Enrolments have grown by 5% over the past five years.
On the Success Index, St Mary's Primary School scores 64.6 out of 100, placing it in the top 50% of primary schools nationally and 490th of 1,619 primary schools in NSW (33rd of 43 in the Parramatta area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1079
- Students in the top advantage quarter (15%)35% of students
- Teacher resourcing (students per teacher) (15%)17.2 students per teacher
- Enrolment growth vs local area (5 years) (10%)+5% enrolments since 2020 (area median -13%)
- ICSEA trend (5 years) (10%)-7 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 Primary School's 377 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Mary's Primary School have changed over the past decade.
Free academic assessment
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Schools near St Mary's Primary School
Closest schools by straight-line distance, with their Success Index.
Rydalmere Public School
Rydalmere · Government primary · P-6
151 students · ICSEA 1018 · 453 m away
Dundas Public School
Dundas · Government primary · K-6
312 students · ICSEA 1070 · 924 m away
St Patrick's Marist College
Dundas · Catholic high school · 7-12
1,070 students · ICSEA 1089 · 1.2 km away
Telopea Public School
Telopea · Government primary · K-6
139 students · ICSEA 991 · 1.7 km away
Rydalmere East Public School
Ermington · Government primary · P-6
104 students · ICSEA 1007 · 1.7 km away
Ermington West Public School
Ermington · Government primary · K-6
104 students · ICSEA 1022 · 1.8 km away
Oatlands Public School
Oatlands · Government primary · K-6
159 students · ICSEA 1072 · 2.1 km away
Parramatta East Public School
Parramatta · Government primary · K-6
465 students · ICSEA 1091 · 2.2 km away
Yates Avenue Public School
Dundas Valley · Government primary · P-6
155 students · ICSEA 1040 · 2.4 km away
Rosehill Public School
Rosehill · Government primary · P-6
550 students · ICSEA 1067 · 2.5 km away
Similar schools
Catholic primary schools in NSW with a comparable ICSEA.
St Therese Catholic Primary School
Padstow · Catholic primary · K-6
200 students · ICSEA 1079
Sacred Heart Catholic Primary School Matraville
Matraville · Catholic primary · K-6
369 students · ICSEA 1078
St Christopher's Catholic Primary School
Holsworthy · Catholic primary · K-6
576 students · ICSEA 1080
Holy Cross Catholic Primary School
Kincumber · Catholic primary · K-6
285 students · ICSEA 1081
St John the Baptist Catholic Primary School
Woy Woy South · Catholic primary · K-6
551 students · ICSEA 1081
St Joachim's Catholic Primary School
Lidcombe · Catholic primary · K-6
357 students · ICSEA 1081
Frequently asked questions
Is St Mary's Primary School a public or private school?
St Mary's Primary School is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Schools NSW.
What year levels does St Mary's Primary School offer?
St Mary's Primary School offers K to 6. It is classified by ACARA as a primary school.
How many students attend St Mary's Primary School?
In 2025, St Mary's Primary School had 377 enrolled students (189 girls, 188 boys), a change of 5% over five years.
What is the ICSEA of St Mary's Primary School?
St Mary's Primary School has an ICSEA (Index of Community Socio-Educational Advantage) of 1079. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does St Mary's Primary School rank in NSW?
St Mary's Primary School ranks 490th of 1,619 primary schools in New South Wales on the Success Index (64.6/100), and 1491st of 4,908 nationally.
What is the student-to-teacher ratio at St Mary's Primary School?
St Mary's Primary School has about 17.2 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Kindergarten at St Mary's Primary School each year?
In 2025, St Mary's Primary School had 53 students in Kindergarten and 57 in Year 6.
Is St Mary's Primary School co-ed?
Yes. St Mary's Primary School is a co-educational school enrolling both girls and boys.
What other schools are near St Mary's Primary School?
There are 10 other schools within 15 km of St Mary's 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 Mary's Primary School?
The closest Success Tutoring centre is Success Tutoring Parramatta, about 3.3 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.