Grant High School
Updated Oct 2026 · ACARA 2025Mount Gambier, South Australia 5290 · Mount Gambier LGA
About Grant High School
Grant 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 978 students (429 girls and 549 boys).
Grant High School has an ICSEA value of 954, indicating a socio-educational profile close to the national average of 1000. That places it in the 26th percentile of Australian schools. 5% of students come from the top socio-educational quarter and 50% from the bottom quarter.
The school employs 75 teachers (70.0 full-time equivalent) and 51 non-teaching staff, giving a student-to-teacher ratio of about 14.0 to 1. Enrolments have grown by 14% over the past five years.
On the Success Index, Grant High School scores 28.0 out of 100, placing it in the lower 50% of secondary schools nationally and 67th of 84 secondary schools in SA (1st 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 954
- Students in the top advantage quarter (15%)5% of students
- Teacher resourcing (students per teacher) (15%)14.0 students per teacher
- Enrolment growth vs local area (5 years) (10%)+14% enrolments since 2020
- ICSEA trend (5 years) (10%)-24 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 Grant High School's 978 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Grant High School have changed over the past decade.
Free academic assessment
Is your child on track at Grant High School?
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Schools near Grant High School
Closest schools by straight-line distance, with their Success Index.
Melaleuca Park Primary School
Mount Gambier · Government primary · U, R-6
107 students · ICSEA 882 · 693 m away
McDonald Park School
Mount Gambier · Government primary · U, R-6
379 students · ICSEA 948 · 2.4 km away
Reidy Park Primary School
Mount Gambier · Government primary · R-6
474 students · ICSEA 990 · 2.6 km away
St Martins Lutheran College
Mount Gambier · Independent combined · R-12
810 students · ICSEA 1028 · 2.9 km away
Gordon Education Centre
Mount Gambier · Government special · U
62 students · ICSEA 951 · 3.5 km away
Mount Gambier High School
Mount Gambier · Government high school · U, 7-12
778 students · ICSEA 946 · 3.5 km away
Mount Gambier North Primary School
Mount Gambier · Government primary · U, R-6
190 students · ICSEA 888 · 3.8 km away
Tenison Woods College
Mount Gambier · Catholic combined · R-12
1,552 students · ICSEA 1031 · 4.2 km away
Yahl Primary School
Yahl · Government primary · R-6
117 students · ICSEA 974 · 4.8 km away
Mulga Street Primary School
Mount Gambier · Government primary · R-6
189 students · ICSEA 943 · 5.1 km away
Similar schools
Government secondary schools in SA with a comparable ICSEA.
Naracoorte High School
Naracoorte · Government high school · 7-12
457 students · ICSEA 952
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
Goolwa Secondary College
Goolwa · Government high school · 7-12
285 students · ICSEA 957
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
Frequently asked questions
Is Grant High School a public or private school?
Grant High School is a public (government) school run by the South Australia education department.
What year levels does Grant High School offer?
Grant High School offers U, 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Grant High School?
In 2025, Grant High School had 978 enrolled students (429 girls, 549 boys), a change of 14% over five years.
What is the ICSEA of Grant High School?
Grant High School has an ICSEA (Index of Community Socio-Educational Advantage) of 954. The national average is 1000, so this indicates a socio-educational profile close to the national average of 1000. ICSEA reflects the school community, not teaching quality.
How does Grant High School rank in SA?
Grant High School ranks 67th of 84 secondary schools in South Australia on the Success Index (28.0/100), and 1233rd of 1,472 nationally.
What is the student-to-teacher ratio at Grant High School?
Grant High School has about 14.0 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Grant High School?
In 2025, Grant High School had 116 students in Year 7 and 195 in Year 12.
Is Grant High School co-ed?
Yes. Grant High School is a co-educational school enrolling both girls and boys.
What other schools are near Grant High School?
There are 10 other schools within 15 km of Grant 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 Grant High School?
The closest Success Tutoring centre is Success Tutoring Torquay, about 313 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.