J J Cahill Memorial High School
Secondary school in Mascot, NSW
About J J Cahill Memorial High School
J J Cahill Memorial High School is a government secondary school located in Mascot, Sydney's North Shore. As a NSW public school, it provides quality education to the local community, catering to students from 7-12.
With 298 students enrolled in 2025 and an ICSEA score of 987 (41th percentile), the school serves a community with above-average socio-educational advantage. The student-to-teacher ratio of 8:1 supports quality learning outcomes.
Contact & Location
- Location Mascot, NSW 2020
- Website jjcahill-h.schools.nsw.gov.au
- MySchool View Profile
School Details
- Type Government
- Level Secondary (7-12)
- Gender Co-educational
- Students (2025) 298 enrolled
- Teaching Staff 32 (39.3 FTE)
- Non-Teaching Staff 13 (11.6 FTE)
- ICSEAIndex of Community Socio-Educational Advantage – measures the socio-educational background of students. Based on parents' occupation, education, and school location. National average is 1000. 987 (41th percentile)
- Indigenous Students 7%
Student Demographics
Gender
Boys: 170 (57%)
Girls: 128 (43%)
Language Background
LBOTE: 66%Language Background Other Than English – students who speak a language other than English at home.
English only: 34%
ICSEA DistributionIndex of Community Socio-Educational Advantage – shows the distribution of students across socio-educational quarters. Based on parents' occupation, education, and school location. National average is 1000.
Bottom 39%
Lower 29%
Upper 23%
Top 9%