Government primary school of 319 students, K–6, in St Marys, NSW (major city).
NAPLAN well below national year-level averages; the result is a C+ overall.
St Marys South Public School is also known as SMSPS and SMSPS St Marys.
St Marys South Public School draws students from the St Marys SPS.
St Marys South Public School has an overall SchoolRank score of 34.5/100, rated "Below average". This score is calculated from academic results, student growth, wellbeing, programs, and value for money. Academically, the school grades C+ (Below average) against other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 945 (23rd percentile; the national average is 1,000).
In 2025 NAPLAN testing at St Marys South Public School, Year 3 students averaged 345 across the tested NAPLAN domains, well below the national average of 407 for that year level, and Year 5 students averaged 467, below the national average of 490 for that year level. 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 Marys South Public School is a small government primary school with approximately 319 students. It offers education for years K-6. As a government school, enrolment is generally available to students living within the school's designated catchment zone. Families outside the zone may apply for out-of-area placement subject to availability.
St Marys South Public School is a government school, so there are no tuition fees. Families may be asked to contribute to voluntary school fees covering materials, excursions, and activities. The school grades B− (Slightly below average) for value for money, which weighs academic results against the cost of attendance.
St Marys South Public School has a student-to-teacher ratio of 16.8:1. This is above the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 13% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 88%, which is good.
St Marys South Public School is located in St Marys, NSW, in a major city. Its ICSEA is 945 (23rd percentile; the national average is 1,000). ICSEA measures the advantage of a school's community, from its parents' education and occupation, not the school's quality. A school with a lower ICSEA and strong academic results may be teaching particularly effectively.