Government secondary co-ed school with 298 students in Mascot, NSW, serving years 7–12.
NAPLAN 21 points below national year-level averages and growth above the national median; the result is a B+ overall.
J J Cahill Memorial High School is also known as JJCMHS, JJCMHS Mascot and J J Cahill Memorial HS.
J J Cahill Memorial High School has an overall SchoolRank score of 64.5/100, rated "Good". This score is calculated from academic results, student growth, wellbeing, programs, and value for money. Academically, the school grades B− (Slightly below average) against other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 987 (41st percentile; the national average is 1,000). Notably, student growth grades A+ (Excellent).
In 2025 NAPLAN testing at J J Cahill Memorial High School, Year 7 students averaged 503 across the tested NAPLAN domains, below the national average of 540 for that year level, and Year 9 students averaged 563, in line with the national average of 569 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.
J J Cahill Memorial High School is a small government secondary school with approximately 298 students. It offers education for years 7-12. 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.
J J Cahill Memorial High 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.
J J Cahill Memorial High School has a student-to-teacher ratio of 7.6:1. This is well below the national average of approximately 14:1, meaning students generally receive more individual attention. Support staff make up 23% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 87%, which is below average.
The Year 12 completion rate is 90%.
J J Cahill Memorial High School is located in Mascot, NSW, in a major city. Its ICSEA is 987 (41st 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.