St Mary MacKillop College is a Catholic co-ed secondary school in Isabella Plains with a strong pastoral focus.
NAPLAN in line with national year-level averages; the result is a B overall.
St Mary MacKillop College is a Catholic co-ed secondary school in Isabella Plains with a strong pastoral focus. The college runs a PE Pathways program for selective and gifted students, and is known for its High School Musical theatrical production. The school suits families looking for a supportive community environment alongside academic and creative opportunities.
St Mary MacKillop College is also known as SMMC and SMMC Isabella Plains.
St Mary MacKillop College has an overall SchoolRank score of 52.5/100, rated "Average". This score is calculated from academic results, student growth, wellbeing, programs, and value for money. Academically, the school grades B (Average) against other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1068 (75th percentile; the national average is 1,000).
In 2025 NAPLAN testing at St Mary MacKillop College, Year 7 students averaged 549 across the tested NAPLAN domains, in line with the national average of 540 for that year level, and Year 9 students averaged 572, in line with the national average of 569 for that year level. Relative to national year-level averages, the school's strongest domain is Grammar. 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 MacKillop College is a large Catholic secondary school with approximately 2,088 students. It offers education for years 7-12. 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 MacKillop College has approximate annual tuition fees of $8,210. Actual fees may vary by year level, and additional costs for uniforms, camps, and extracurricular activities typically apply. The school grades B− (Slightly below average) for value for money, which weighs academic results against the cost of attendance.
St Mary MacKillop College has a student-to-teacher ratio of 13.8:1. This is around the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 29% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 86%, which is below average.
The top ATAR was 99.90.
St Mary MacKillop College is located in Isabella Plains, ACT, in a major city. Its ICSEA is 1068 (75th 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.