Government · Secondary · St Marys
St Marys Senior High School
St Marys Senior High School is a government secondary school in St Marys, New South Wales, teaching year levels 11-12 to 926 students.
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ICSEA reflects the socio-educational background of students at this school - it is an intake measure, not a teaching quality or outcomes ranking. National average is 1000. Range is roughly 500–1300. This school's ICSEA places it above 69% of Australian schools.
St Marys Senior High School had 926 students in 2025, compared with 913 in 2016 (up 1%).
Total enrolments as reported to ACARA each August. A year marked "-" was not published for this school. Enrolment counts how many students attend, not how good a school is. Source: ACARA School Profile 2008-2025 (Data Access Program).
Comparing suburbs near St Marys?
The Move Planner shows school catchments, childcare, property prices, and demographics side by side.
Open Move Planner → St Marys Get a one-page family report for St Marys - North St Marys →Catchment zone shown where matched to official NSW government data.
Map: © OpenStreetMap contributors. School pin is approximate (ACARA geocoded location).
View all New South Wales schools on the map →St Marys Senior High School catchment
We could not match a zone boundary for this school in the published NSW government zone data, so no catchment suburbs are listed. Some government schools, such as selective, specialist and senior-only schools, do not have a local zone. Check an address with the official NSW zone finder.
The suburb: St Marys - North St Marys
Figures are for the St Marys - North St Marys statistical area (SA2), which contains the school. SA2 boundaries do not always equal suburb boundaries, and childcare services are matched by suburb name. See the full St Marys - North St Marys profile →
© State of New South Wales (Department of Communities and Justice), licensed under CC BY 4.0 (copyright notice).
Nearest schools to St Marys Senior High School
Listed nearest first. Distance is a straight line between ACARA school locations, not travel distance, and the order is not a ranking.
To see where St Marys Senior High School sits among other suburbs, open the map of New South Wales suburbs.
Questions about St Marys Senior High School
How many students go to St Marys Senior High School?
St Marys Senior High School has 926 students enrolled (362 boys and 564 girls), according to the ACARA School Profile 2025.
What year levels does St Marys Senior High School teach?
St Marys Senior High School teaches year levels 11-12. ACARA lists it as a secondary school.
Is St Marys Senior High School a government or non-government school?
St Marys Senior High School is a government school in St Marys, New South Wales.
What does the ICSEA of 1052 at St Marys Senior High School mean?
ICSEA, the Index of Community Socio-Educational Advantage, describes the family background of the students enrolled at a school, such as parents' education and occupation. The national average is 1000. St Marys Senior High School has an ICSEA of 1052, which places it above 69% of Australian schools. It measures student intake, not teaching quality or results.
How many childcare services are near St Marys Senior High School?
17 childcare services are listed on the ACECQA national register for St Marys - North St Marys, the statistical area around the school. Services are matched by suburb name.
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Source: ACARA School Profile & School Location 2025 (Data Access Program). VIC, NSW and QLD government catchment zones from DET School Zones 2027, NSW DoE School Intake Zones 2026 and Queensland Department of Education state school catchments 2026 (CC BY 4.0). ICSEA is a socio-educational intake index - it measures student background, not teaching quality or outcomes. Methodology →