St Mary's Anglican Girls' School
Updated Oct 2026 · ACARA 2025Karrinyup, Western Australia 6018 · Stirling LGA
#13 of 172 combined schools in WA
#152 of 1,259 nationally
About St Mary's Anglican Girls' School
St Mary's Anglican Girls' School is an independent girls' combined (K–12) school located in Karrinyup, Western Australia (6018), within the Stirling local government area. It caters for students from PP to 12 and in 2025 enrolled 1,483 students. The school is affiliated with Association of Independent Schools of WA.
St Mary's Anglican Girls' School has an ICSEA value of 1151, indicating exceptionally high socio-educational advantage, among the most advantaged school communities in Australia. That places it in the 95th percentile of Australian schools. 61% of students come from the top socio-educational quarter and 2% from the bottom quarter.
The school employs 193 teachers (162.3 full-time equivalent) and 104 non-teaching staff, giving a student-to-teacher ratio of about 9.1 to 1. Enrolments have grown by 3% over the past five years.
On the Success Index, St Mary's Anglican Girls' School scores 77.2 out of 100, placing it in the top 25% of combined schools nationally and 13th of 172 combined schools in WA (4th of 9 in the Stirling area).
Year 12 ATAR results (2025)
The School Curriculum and Standards Authority lists, for every ATAR course, the schools whose students had combined scores in the top 15% of that course. St Mary's Anglican Girls' School appears for 11 courses.
Courses
Biology · Business Management and Enterprise · Economics · Food Science and Technology · Geography · Human Biology · Literature · Mathematics Methods · Mathematics Specialist · Physics · Politics and Law
WA does not publish median ATARs by school; this list is the official per-school measure of top-end achievement. See WA schools with the most top-performing ATAR students.
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1151
- Students in the top advantage quarter (15%)61% of students
- Teacher resourcing (students per teacher) (15%)9.1 students per teacher
- Enrolment growth vs local area (5 years) (10%)+3% enrolments since 2020 (area median +5%)
- 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 Anglican Girls' School's 1,483 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Mary's Anglican Girls' School have changed over the past decade.
Free academic assessment
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Schools near St Mary's Anglican Girls' School
Closest schools by straight-line distance, with their Success Index.
Deanmore Primary School
Karrinyup · Government primary · K-6
486 students · ICSEA 1111 · 741 m away
Karrinyup Primary School
Karrinyup · Government primary · K-6
561 students · ICSEA 1115 · 1.1 km away
Our Lady of Good Counsel School
Karrinyup · Catholic primary · PP-6
152 students · ICSEA 1095 · 1.2 km away
Our Lady of Grace School
North Beach · Catholic primary · PP-6
587 students · ICSEA 1108 · 1.6 km away
Newborough Primary School
Karrinyup · Government primary · K-6
344 students · ICSEA 1086 · 1.6 km away
North Beach Primary School
North Beach · Government primary · K-6
417 students · ICSEA 1091 · 1.8 km away
St John's School
Scarborough · Catholic primary · PP-6
164 students · ICSEA 1102 · 1.9 km away
Scarborough Primary School
Scarborough · Government primary · K-6
278 students · ICSEA 1101 · 2.3 km away
International School of Western Australia
City Beach · Independent combined · PP-12
396 students · ICSEA 1180 · 2.6 km away
Doubleview Primary School
Doubleview · Government primary · K-6
476 students · ICSEA 1118 · 2.6 km away
Similar schools
Independent combined schools in WA with a comparable ICSEA.
Carmel School
Dianella · Independent combined · PP-12
390 students · ICSEA 1149
Wesley College
South Perth · Independent combined · PP-12
1,312 students · ICSEA 1147
Presbyterian Ladies' College
Peppermint Grove · Independent combined · PP-12
963 students · ICSEA 1159
Penrhos College
Como · Independent combined · PP-12
1,033 students · ICSEA 1143
Hale School
Wembley Downs · Independent combined · PP-12
1,623 students · ICSEA 1161
The Japanese School in Perth
City Beach · Independent combined · 1-9
39 students · ICSEA 1140
Frequently asked questions
Is St Mary's Anglican Girls' School a public or private school?
St Mary's Anglican Girls' School is a Independent school, which makes it a non-government (private) school affiliated with Association of Independent Schools of WA.
What year levels does St Mary's Anglican Girls' School offer?
St Mary's Anglican Girls' School offers PP to 12. It is classified by ACARA as a combined school.
How many students attend St Mary's Anglican Girls' School?
In 2025, St Mary's Anglican Girls' School had 1,483 enrolled students (1,483 girls, 0 boys), a change of 3% over five years.
What is the ICSEA of St Mary's Anglican Girls' School?
St Mary's Anglican Girls' School has an ICSEA (Index of Community Socio-Educational Advantage) of 1151. 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 Mary's Anglican Girls' School rank in WA?
St Mary's Anglican Girls' School ranks 13th of 172 combined schools in Western Australia on the Success Index (77.2/100), and 152nd of 1,259 nationally.
What is the student-to-teacher ratio at St Mary's Anglican Girls' School?
St Mary's Anglican Girls' School has about 9.1 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at St Mary's Anglican Girls' School?
In 2025, St Mary's Anglican Girls' School had 185 students in Year 7 and 170 in Year 12.
Is St Mary's Anglican Girls' School co-ed?
No. St Mary's Anglican Girls' School is a girls' school.
What other schools are near St Mary's Anglican Girls' School?
There are 10 other schools within 15 km of St Mary's Anglican Girls' 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 Anglican Girls' School?
The closest Success Tutoring centre is Success Tutoring Stirling, about 3.9 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.