Mount Gambier High School
Updated Oct 2026 · ACARA 2025Mount Gambier, South Australia 5290 · Mount Gambier LGA
About Mount Gambier High School
Mount Gambier High School is a public high school located in Mount Gambier, South Australia (5290), within the Mount Gambier local government area. It caters for students from U, 7 to 12 and in 2025 enrolled 778 students (390 girls and 388 boys).
Mount Gambier High School has an ICSEA value of 946, indicating below-average socio-educational advantage. That places it in the 23rd percentile of Australian schools. 4% of students come from the top socio-educational quarter and 54% from the bottom quarter.
The school employs 60 teachers (55.9 full-time equivalent) and 39 non-teaching staff, giving a student-to-teacher ratio of about 13.9 to 1. Enrolments have grown by 6% over the past five years.
On the Success Index, Mount Gambier High School scores 25.6 out of 100, placing it in the lower 50% of secondary schools nationally and 72nd of 84 secondary schools in SA (2nd of 2 in the Mount Gambier area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 946
- Students in the top advantage quarter (15%)4% of students
- Teacher resourcing (students per teacher) (15%)13.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)+6% enrolments since 2020
- ICSEA trend (5 years) (10%)-13 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 Mount Gambier High School's 778 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Mount Gambier High School have changed over the past decade.
Free academic assessment
Is your child on track at Mount Gambier High School?
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.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Your nearest centre: Success Tutoring Torquay
Schools near Mount Gambier High School
Closest schools by straight-line distance, with their Success Index.
Gordon Education Centre
Mount Gambier · Government special · U
62 students · ICSEA 951 · 250 m away
Tenison Woods College
Mount Gambier · Catholic combined · R-12
1,552 students · ICSEA 1031 · 980 m away
Reidy Park Primary School
Mount Gambier · Government primary · R-6
474 students · ICSEA 990 · 1.1 km away
Mount Gambier North Primary School
Mount Gambier · Government primary · U, R-6
190 students · ICSEA 888 · 1.3 km away
Mulga Street Primary School
Mount Gambier · Government primary · R-6
189 students · ICSEA 943 · 1.7 km away
McDonald Park School
Mount Gambier · Government primary · U, R-6
379 students · ICSEA 948 · 2.4 km away
St Martins Lutheran College
Mount Gambier · Independent combined · R-12
810 students · ICSEA 1028 · 2.9 km away
Melaleuca Park Primary School
Mount Gambier · Government primary · U, R-6
107 students · ICSEA 882 · 3.0 km away
Suttontown Primary School
Suttontown · Government primary · R-6
101 students · ICSEA 960 · 3.2 km away
Grant High School
Mount Gambier · Government high school · U, 7-12
978 students · ICSEA 954 · 3.5 km away
Similar schools
Government secondary schools in SA with a comparable ICSEA.
Para Hills High School
Para Hills West · Government high school · U, 7-12
670 students · ICSEA 948
Balaklava High School
Balaklava · Government high school · U, 7-12
425 students · ICSEA 948
Riverton and District High School
Riverton · Government high school · 7-12
184 students · ICSEA 943
Thebarton Senior College
Torrensville · Government high school · U, 11-12
1,284 students · ICSEA 951
Le Fevre High School
Semaphore South · Government high school · U, 7-12
456 students · ICSEA 951
Salisbury East High School
Salisbury East · Government high school · U, 7-12
1,008 students · ICSEA 941
Frequently asked questions
Is Mount Gambier High School a public or private school?
Mount Gambier High School is a public (government) school run by the South Australia education department.
What year levels does Mount Gambier High School offer?
Mount Gambier High School offers U, 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Mount Gambier High School?
In 2025, Mount Gambier High School had 778 enrolled students (390 girls, 388 boys), a change of 6% over five years.
What is the ICSEA of Mount Gambier High School?
Mount Gambier High School has an ICSEA (Index of Community Socio-Educational Advantage) of 946. The national average is 1000, so this indicates below-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Mount Gambier High School rank in SA?
Mount Gambier High School ranks 72nd of 84 secondary schools in South Australia on the Success Index (25.6/100), and 1293rd of 1,472 nationally.
What is the student-to-teacher ratio at Mount Gambier High School?
Mount Gambier High School has about 13.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Mount Gambier High School?
In 2025, Mount Gambier High School had 142 students in Year 7 and 119 in Year 12.
Is Mount Gambier High School co-ed?
Yes. Mount Gambier High School is a co-educational school enrolling both girls and boys.
What other schools are near Mount Gambier High School?
There are 10 other schools within 15 km of Mount Gambier High School 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 Mount Gambier High School?
The closest Success Tutoring centre is Success Tutoring Torquay, about 316 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.