Seaford Secondary College
Updated Oct 2026 · ACARA 2025Seaford, South Australia 5169 · Onkaparinga LGA
About Seaford Secondary College
Seaford Secondary College is a public high school located in Seaford, South Australia (5169), within the Onkaparinga local government area. It caters for students from U, 7 to 12 and in 2025 enrolled 829 students (388 girls and 441 boys).
Seaford Secondary College has an ICSEA value of 962, indicating a socio-educational profile close to the national average of 1000. That places it in the 30th percentile of Australian schools. 5% of students come from the top socio-educational quarter and 50% from the bottom quarter.
The school employs 67 teachers (62.5 full-time equivalent) and 46 non-teaching staff, giving a student-to-teacher ratio of about 13.3 to 1. Enrolments have remained steady over the past five years.
On the Success Index, Seaford Secondary College scores 33.3 out of 100, placing it in the lower 50% of secondary schools nationally and 61st of 84 secondary schools in SA (3rd of 5 in the Onkaparinga area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 962
- Students in the top advantage quarter (15%)5% of students
- Teacher resourcing (students per teacher) (15%)13.3 students per teacher
- Enrolment growth vs local area (5 years) (10%)+1% enrolments since 2020 (area median -9%)
- ICSEA trend (5 years) (10%)-10 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 Seaford Secondary College's 829 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Seaford Secondary College have changed over the past decade.
Free academic assessment
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Schools near Seaford Secondary College
Closest schools by straight-line distance, with their Success Index.
All Saints Catholic Primary School
Seaford · Catholic primary · R-6
536 students · ICSEA 1017 · 217 m away
Moana Primary School
Seaford · Government primary · R-6
369 students · ICSEA 1018 · 863 m away
Seaford Rise Primary School
Seaford Rise · Government primary · U, R-6
369 students · ICSEA 977 · 1.4 km away
South Port Primary School
Port Noarlunga South · Government primary · U, R-6
295 students · ICSEA 968 · 1.6 km away
Old Noarlunga Primary School
Old Noarlunga · Government primary · R-6
155 students · ICSEA 999 · 1.7 km away
Noarlunga Downs Primary School
Noarlunga Downs · Government primary · U, R-6
124 students · ICSEA 937 · 4.3 km away
Cardijn College
Noarlunga Downs · Catholic combined · R-12
2,247 students · ICSEA 1019 · 4.8 km away
Port Noarlunga Primary School
Port Noarlunga · Government primary · R-6
370 students · ICSEA 999 · 4.9 km away
Huntfield Heights School P-6
Huntfield Heights · Government primary · R-6
80 students · ICSEA 898 · 5.0 km away
McLaren Vale Primary School
Mclaren Vale · Government primary · R-6
521 students · ICSEA 1018 · 5.2 km away
Similar schools
Government secondary schools in SA with a comparable ICSEA.
Waikerie High School
Waikerie · Government high school · 7-12
301 students · ICSEA 962
Valley View Secondary School
Para Vista · Government high school · U, 7-12
596 students · ICSEA 963
Adelaide Secondary School of English
West Croydon · Government high school · U
487 students · ICSEA 961
Gladstone High School
Gladstone · Government high school · 7-12
183 students · ICSEA 967
Goolwa Secondary College
Goolwa · Government high school · 7-12
285 students · ICSEA 957
Bordertown High School
Bordertown · Government high school · 7-12
307 students · ICSEA 969
Frequently asked questions
Is Seaford Secondary College a public or private school?
Seaford Secondary College is a public (government) school run by the South Australia education department.
What year levels does Seaford Secondary College offer?
Seaford Secondary College offers U, 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Seaford Secondary College?
In 2025, Seaford Secondary College had 829 enrolled students (388 girls, 441 boys), a change of 1% over five years.
What is the ICSEA of Seaford Secondary College?
Seaford Secondary College has an ICSEA (Index of Community Socio-Educational Advantage) of 962. 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 Seaford Secondary College rank in SA?
Seaford Secondary College ranks 61st of 84 secondary schools in South Australia on the Success Index (33.3/100), and 1107th of 1,472 nationally.
What is the student-to-teacher ratio at Seaford Secondary College?
Seaford Secondary College has about 13.3 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Seaford Secondary College?
In 2025, Seaford Secondary College had 106 students in Year 7 and 104 in Year 12.
Is Seaford Secondary College co-ed?
Yes. Seaford Secondary College is a co-educational school enrolling both girls and boys.
What other schools are near Seaford Secondary College?
There are 10 other schools within 15 km of Seaford Secondary 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 Seaford Secondary College?
The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 39 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.