Cornerstone College
Updated Oct 2026 · ACARA 2025Mount Barker, South Australia 5251 · Mount Barker LGA
About Cornerstone College
Cornerstone College is an independent high school located in Mount Barker, South Australia (5251), within the Mount Barker local government area. It caters for students from 7 to 12 and in 2025 enrolled 754 students (405 girls and 349 boys). The school is affiliated with Lutheran Education SA, NT & WA.
Cornerstone College has an ICSEA value of 1094, indicating above-average socio-educational advantage. That places it in the 82nd percentile of Australian schools. 35% of students come from the top socio-educational quarter and 7% from the bottom quarter.
The school employs 68 teachers (56.4 full-time equivalent) and 56 non-teaching staff, giving a student-to-teacher ratio of about 13.4 to 1. Enrolments have fallen by 11% over the past five years.
On the Success Index, Cornerstone College scores 69.1 out of 100, placing it in the top 25% of secondary schools nationally and 15th of 84 secondary schools in SA (1st of 2 in the Mount Barker area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1094
- Students in the top advantage quarter (15%)35% of students
- Teacher resourcing (students per teacher) (15%)13.4 students per teacher
- Enrolment growth vs local area (5 years) (10%)-11% enrolments since 2020
- ICSEA trend (5 years) (10%)+8 ICSEA points since 2020
The Success Index summarises the academic environment of a school community using official ACARA data. It is not a measure of teaching quality or student results. Read the methodology.
Student profile
Distribution of students across socio-educational advantage (SEA) quarters, plus community characteristics.
Enrolments by year level
How Cornerstone College's 754 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Cornerstone College have changed over the past decade.
Free academic assessment
Is your child on track at Cornerstone College?
Rankings tell you about a school community. A free Success Tutoring assessment tells you about your child: exactly where they are in English and Maths, where the gaps are, and a plan to close them. Small-group, Australian-curriculum tutoring with no lock-in contracts.
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Schools near Cornerstone College
Closest schools by straight-line distance, with their Success Index.
Mount Barker Primary School
Mount Barker · Government primary · U, R-6
326 students · ICSEA 1016 · 833 m away
St Francis de Sales College
Mount Barker · Catholic combined · R-12
1,047 students · ICSEA 1051 · 1.3 km away
St Mark's Lutheran School
Mount Barker · Independent primary · R-6
351 students · ICSEA 1071 · 1.5 km away
Mount Barker High School
Mount Barker · Government high school · U, 7-12
1,061 students · ICSEA 1010 · 1.7 km away
Littlehampton Primary School
Littlehampton · Government primary · R-6
336 students · ICSEA 1036 · 1.7 km away
Mount Barker South Primary School
Mount Barker · Government primary · U, R-6
399 students · ICSEA 1011 · 2.3 km away
Mount Barker Waldorf School
Mount Barker · Independent combined · R-12
321 students · ICSEA 1087 · 3.3 km away
Nairne School - Preschool and Primary
Nairne · Government primary · R-6
399 students · ICSEA 1009 · 5.1 km away
St Michael's Lutheran School, Hahndorf Inc
Hahndorf · Independent primary · R-6
192 students · ICSEA 1101 · 5.3 km away
Hahndorf Primary School
Hahndorf · Government primary · R-6
166 students · ICSEA 1049 · 5.4 km away
Similar schools
Independent secondary schools in SA with a comparable ICSEA.
University Senior College at Adelaide University
Adelaide University · Independent high school · 10-12
523 students · ICSEA 1092
Endeavour College
Mawson Lakes · Independent high school · 7-12
738 students · ICSEA 1083
Muirden Senior College
Adelaide · Independent high school · 11-12
91 students · ICSEA 1079
Immanuel College
Novar Gardens · Independent high school · 7-12
1,184 students · ICSEA 1117
Temple Christian College
Mile End · Independent high school · 7-12
1,151 students · ICSEA 1043
Specialised Assistance School For Youth (SASY)
Adelaide · Independent high school · 8-12
205 students · ICSEA 1026
Frequently asked questions
Is Cornerstone College a public or private school?
Cornerstone College is a Independent school, which makes it a non-government (private) school affiliated with Lutheran Education SA, NT & WA.
What year levels does Cornerstone College offer?
Cornerstone College offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Cornerstone College?
In 2025, Cornerstone College had 754 enrolled students (405 girls, 349 boys), a change of -11% over five years.
What is the ICSEA of Cornerstone College?
Cornerstone College has an ICSEA (Index of Community Socio-Educational Advantage) of 1094. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Cornerstone College rank in SA?
Cornerstone College ranks 15th of 84 secondary schools in South Australia on the Success Index (69.1/100), and 303rd of 1,472 nationally.
What is the student-to-teacher ratio at Cornerstone College?
Cornerstone College has about 13.4 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Cornerstone College?
In 2025, Cornerstone College had 142 students in Year 7 and 106 in Year 12.
Is Cornerstone College co-ed?
Yes. Cornerstone College is a co-educational school enrolling both girls and boys.
What other schools are near Cornerstone College?
There are 10 other schools within 15 km of Cornerstone College in our database. Scroll up to the "Nearby schools" section to compare them by Success Index, ICSEA and enrolments, or use the Compare tool.
Where can I get tutoring near Cornerstone College?
The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 29 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.