Cornerstone College is an independent co-educational secondary school in Mount Barker known for strong sports and performing arts programs.
NAPLAN modestly above national year-level averages; the result is a B- overall.
Cornerstone College is an independent co-educational secondary school in Mount Barker known for strong sports and performing arts programs. The school maintains a pastoral culture with a tight-knit community feel. It provides inclusive education support and offers distinctive facilities including the Purtinga Environmental Centre, Technology Centre, and an on-site performing arts theatre. Cornerstone suits families seeking a well-rounded secondary education with emphasis on creative and sporting pursuits within a connected school environment.
8.6% of students achieved ATAR ≥ 90 — #11 of 11 South Australia schools.
Cornerstone College has an overall SchoolRank score of 59.4/100, rated "Average". This score is calculated from academic results, student growth, wellbeing, extracurricular programs, and value for money. Academically, the school scores 58/100, indicating moderate performance relative to other Australian schools. The school's ICSEA (Index of Community Socio-Educational Advantage) is 1094, well above the national average of 1,000.
In 2025 NAPLAN testing at Cornerstone College, Year 7 students averaged 551 across the tested NAPLAN domains, above the national average of 540 for that year level, and Year 9 students averaged 577, in line with the national average of 569 for that year level. Relative to national year-level averages, the school's strongest domain is Writing. 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.
Cornerstone College is a medium-sized independent secondary school with approximately 754 students. It offers education for years 7-12. As a independent school, enrolment typically involves an application process. Contact the school directly for enrolment criteria, waiting lists, and open day information.
Cornerstone College has a student-to-teacher ratio of 13.4:1. This is around the national average of approximately 14:1, meaning class sizes are typical for Australian schools. Support staff make up 41% of the workforce, providing additional learning assistance and pastoral care. The student attendance rate is 91%, which is moderate.
The Year 12 completion rate is 100%. 90% of students received a university offer.
Cornerstone College is located in Mount Barker, SA, classified as a major cities school. With an ICSEA of 1094 (82th percentile), the school community's socio-educational advantage is above average, families tend to have higher education and income levels. ICSEA measures the educational advantage of a school's community, not the school's quality, a lower ICSEA school with strong academic scores may indicate particularly effective teaching.