Small Catholic primary school (113 students, Prep–6) in Thornbury, Victoria.
NAPLAN modestly above national year-level averages; the result is a B+ overall.
St Mary's School is also known as SMS Thornbury.
St Mary's School has an overall SchoolRank score of 63.1/100, rated "Good". This score is calculated from academic results, student growth, wellbeing, extracurricular programs, and value for money. Academically, the school scores 59/100, indicating moderate performance relative to other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1089, well above the national average of 1,000.
In 2025 NAPLAN testing at St Mary's School, Year 3 students averaged 440 across the tested NAPLAN domains, above the national average of 407 for that year level, and Year 5 students averaged 491, in line with the national average of 490 for that year level. Relative to national year-level averages, the school's strongest domain is Writing. National averages are specific to each year level, because NAPLAN scores are scaled so older year levels score higher, a school-wide average can't be compared with a single national figure.
St Mary's School is a very small catholic primary school with approximately 113 students. It offers education for years Prep-6. As a catholic school, enrolment typically involves an application process. Contact the school directly for enrolment criteria, waiting lists, and open day information.
St Mary's School has approximate annual tuition fees of $2,218. Actual fees may vary by year level, and additional costs for uniforms, camps, and extracurricular activities typically apply. The school's value score is 58/100, which measures academic outcomes relative to the cost of attendance.
St Mary's School has a student-to-teacher ratio of 9.7:1. This is well below the national average of approximately 14:1, meaning students generally receive more individual attention. Support staff make up 38% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 92%, which is strong.
St Mary's School is located in Thornbury, VIC, classified as a major cities school. With an ICSEA of 1089 (81th percentile), the school community's socio-educational advantage is above average, families tend to have higher education and income levels. ICSEA measures the educational advantage of a school's community, not the school's quality, a lower ICSEA school with strong academic scores may indicate particularly effective teaching.