Seaton High School
Updated Oct 2026 · ACARA 2025Seaton, South Australia 5023 · Charles Sturt LGA
About Seaton High School
Seaton High School is a public high school located in Seaton, South Australia (5023), within the Charles Sturt local government area. It caters for students from U, 7 to 12 and in 2025 enrolled 917 students (409 girls and 508 boys).
Seaton High School has an ICSEA value of 1001, indicating a socio-educational profile close to the national average of 1000. That places it in the 47th percentile of Australian schools. 14% of students come from the top socio-educational quarter and 35% from the bottom quarter.
The school employs 78 teachers (72.4 full-time equivalent) and 43 non-teaching staff, giving a student-to-teacher ratio of about 12.6 to 1. Enrolments have grown by 6% over the past five years.
On the Success Index, Seaton High School scores 49.1 out of 100, placing it in the lower 50% of secondary schools nationally and 37th of 84 secondary schools in SA (4th of 5 in the Charles Sturt area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1001
- Students in the top advantage quarter (15%)14% of students
- Teacher resourcing (students per teacher) (15%)12.6 students per teacher
- Enrolment growth vs local area (5 years) (10%)+6% enrolments since 2020 (area median +13%)
- ICSEA trend (5 years) (10%)+9 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 Seaton High School's 917 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Seaton High School have changed over the past decade.
Free academic assessment
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Schools near Seaton High School
Closest schools by straight-line distance, with their Success Index.
Hendon Primary School
Royal Park · Government primary · U, R-6
270 students · ICSEA 965 · 1.0 km away
Our Lady Queen of Peace School
Albert Park · Catholic primary · R-6
278 students · ICSEA 1043 · 1.5 km away
Seaton Park Primary School
Seaton · Government primary · U, R-6
149 students · ICSEA 999 · 1.7 km away
Grange Primary School
Grange · Government primary · R-6
702 students · ICSEA 1075 · 2.1 km away
Findon High School
Findon · Government high school · U, 7-12
467 students · ICSEA 978 · 2.4 km away
Woodville Primary School
Woodville South · Government primary · R-6
204 students · ICSEA 1020 · 2.6 km away
Alberton Primary School
Queenstown · Government primary · R-6
262 students · ICSEA 1002 · 2.7 km away
Fulham Gardens Primary School
Henley Beach · Government primary · U, R-6
148 students · ICSEA 1042 · 2.9 km away
St Michael's College
Henley Beach · Catholic combined · R-12
2,193 students · ICSEA 1064 · 3.2 km away
Kidman Park Primary School
Kidman Park · Government primary · U, R-6
485 students · ICSEA 1053 · 3.3 km away
Similar schools
Government secondary schools in SA with a comparable ICSEA.
Underdale High School
Underdale · Government high school · 7-12
629 students · ICSEA 1000
Modbury High School
Modbury · Government high school · U, 7-12
926 students · ICSEA 1005
Birdwood High School
Birdwood · Government high school · 7-12
555 students · ICSEA 996
Golden Grove High School
Golden Grove · Government high school · U, 7-12
1,486 students · ICSEA 1007
Clare High School
Clare · Government high school · U, 7-12
428 students · ICSEA 994
Hamilton Secondary College
Mitchell Park · Government high school · U, 7-12
609 students · ICSEA 994
Frequently asked questions
Is Seaton High School a public or private school?
Seaton High School is a public (government) school run by the South Australia education department.
What year levels does Seaton High School offer?
Seaton High School offers U, 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Seaton High School?
In 2025, Seaton High School had 917 enrolled students (409 girls, 508 boys), a change of 6% over five years.
What is the ICSEA of Seaton High School?
Seaton High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1001. 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 Seaton High School rank in SA?
Seaton High School ranks 37th of 84 secondary schools in South Australia on the Success Index (49.1/100), and 761st of 1,472 nationally.
What is the student-to-teacher ratio at Seaton High School?
Seaton High School has about 12.6 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Seaton High School?
In 2025, Seaton High School had 132 students in Year 7 and 150 in Year 12.
Is Seaton High School co-ed?
Yes. Seaton High School is a co-educational school enrolling both girls and boys.
What other schools are near Seaton High School?
There are 10 other schools within 15 km of Seaton 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 Seaton High School?
The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 13 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.