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.
Cornerstone College is also known as Cornerstone Mount Barker.
8.6% of students achieved ATAR ≥ 90 — #11 of 11 South Australia schools.
Cornerstone College has an overall SchoolRank score of 57.9/100, 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 1094 (82nd percentile; the national average is 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 an 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 good.
The top ATAR was 96.95. 8.6% of students achieved an ATAR above 90. 30% achieved above 80. The Year 12 completion rate is 100%. 90% of students received a university offer.
Cornerstone College is located in Mount Barker, SA, in a major city. Its ICSEA is 1094 (82nd 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.