St Mary's School
Updated Oct 2026 · ACARA 2025Northampton, Western Australia 6535 · Northampton LGA
About St Mary's School
St Mary's School is a catholic primary school located in Northampton, Western Australia (6535), within the Northampton local government area. It caters for students from PP to 6 and in 2025 enrolled 56 students (24 girls and 32 boys). The school is affiliated with Catholic Education Western Australia.
St Mary's School has an ICSEA value of 979, indicating a socio-educational profile close to the national average of 1000. That places it in the 37th percentile of Australian schools. 13% of students come from the top socio-educational quarter and 34% from the bottom quarter.
The school employs 8 teachers (6.0 full-time equivalent) and 9 non-teaching staff, giving a student-to-teacher ratio of about 9.3 to 1. Enrolments have grown by 8% over the past five years.
On the Success Index, St Mary's School scores 45.2 out of 100. Because it has fewer than 80 students it is not included in ranking tables, where small enrolments make year-to-year comparisons unreliable.
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 979
- Students in the top advantage quarter (15%)13% of students
- Teacher resourcing (students per teacher) (15%)9.3 students per teacher
- Enrolment growth vs local area (5 years) (10%)+8% enrolments since 2020
- ICSEA trend (5 years) (10%)+15 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 School's 56 students are spread across year levels in 2025.
Enrolment trend
How enrolments at St Mary's School have changed over the past decade.
Free academic assessment
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Schools near St Mary's School
Closest schools by straight-line distance, with their Success Index.
Similar schools
Catholic primary schools in WA with a comparable ICSEA.
St Mary's Catholic School
Boyup Brook · Catholic primary · PP-6
52 students · ICSEA 979
St Patrick's School
Katanning · Catholic primary · PP-6
116 students · ICSEA 983
St Joseph's School
Waroona · Catholic primary · PP-6
164 students · ICSEA 971
St Bernard's School
Kojonup · Catholic primary · PP-6
64 students · ICSEA 988
St Lawrence's Primary School
Geraldton · Catholic primary · PP-6
563 students · ICSEA 990
St Joseph's School
Boulder · Catholic primary · PP-6
193 students · ICSEA 994
Frequently asked questions
Is St Mary's School a public or private school?
St Mary's School is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Education Western Australia.
What year levels does St Mary's School offer?
St Mary's School offers PP to 6. It is classified by ACARA as a primary school.
How many students attend St Mary's School?
In 2025, St Mary's School had 56 enrolled students (24 girls, 32 boys), a change of 8% over five years.
What is the ICSEA of St Mary's School?
St Mary's School has an ICSEA (Index of Community Socio-Educational Advantage) of 979. The national average is 1000, so this indicates a socio-educational profile close to the national average of 1000. ICSEA reflects the school community, not teaching quality.
What is the student-to-teacher ratio at St Mary's School?
St Mary's School has about 9.3 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How many students start Pre-primary at St Mary's School each year?
In 2025, St Mary's School had 9 students in Pre-primary and 8 in Year 6.
Is St Mary's School co-ed?
Yes. St Mary's School is a co-educational school enrolling both girls and boys.
What other schools are near St Mary's School?
There are 1 other schools within 15 km of St Mary's 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 School?
The closest Success Tutoring centre is Success Tutoring Joondalup, about 392 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.