Willunga High School
Updated Oct 2026 · ACARA 2025Willunga, South Australia 5172 · Onkaparinga LGA
About Willunga High School
Willunga High School is a public high school located in Willunga, South Australia (5172), within the Onkaparinga local government area. It caters for students from U, 7 to 12 and in 2025 enrolled 693 students (359 girls and 334 boys).
Willunga High School has an ICSEA value of 994, indicating a socio-educational profile close to the national average of 1000. That places it in the 44th percentile of Australian schools. 9% of students come from the top socio-educational quarter and 37% from the bottom quarter.
The school employs 49 teachers (46.8 full-time equivalent) and 30 non-teaching staff, giving a student-to-teacher ratio of about 14.6 to 1. Enrolments have fallen by 30% over the past five years.
On the Success Index, Willunga High School scores 40.0 out of 100, placing it in the lower 50% of secondary schools nationally and 52nd of 84 secondary schools in SA (2nd 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 994
- Students in the top advantage quarter (15%)9% of students
- Teacher resourcing (students per teacher) (15%)14.6 students per teacher
- Enrolment growth vs local area (5 years) (10%)-30% enrolments since 2020 (area median -9%)
- ICSEA trend (5 years) (10%)+15 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 Willunga High School's 693 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Willunga High School have changed over the past decade.
Free academic assessment
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Schools near Willunga High School
Closest schools by straight-line distance, with their Success Index.
Willunga Primary School
Willunga · Government primary · R-6
346 students · ICSEA 1027 · 723 m away
Willunga Waldorf School
Willunga · Independent combined · R-12
390 students · ICSEA 1072 · 1.3 km away
Tatachilla Lutheran College
Mclaren Vale · Independent combined · R-12
1,103 students · ICSEA 1068 · 5.4 km away
McLaren Vale Primary School
Mclaren Vale · Government primary · R-6
521 students · ICSEA 1018 · 6.1 km away
McLaren Flat Primary School
Mclaren Flat · Government primary · R-6
207 students · ICSEA 1030 · 7.0 km away
Aldinga Payinthi College
Aldinga · Government combined · U, R-12
831 students · ICSEA 954 · 7.8 km away
Aldinga Beach Primary School
Aldinga · Government primary · R-6
377 students · ICSEA 959 · 8.5 km away
Seaford Rise Primary School
Seaford Rise · Government primary · U, R-6
369 students · ICSEA 977 · 9.4 km away
Old Noarlunga Primary School
Old Noarlunga · Government primary · R-6
155 students · ICSEA 999 · 10 km away
Seaford Secondary College
Seaford · Government high school · U, 7-12
829 students · ICSEA 962 · 11 km away
Similar schools
Government secondary schools in SA with a comparable ICSEA.
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
Birdwood High School
Birdwood · Government high school · 7-12
555 students · ICSEA 996
Nuriootpa High School
Nuriootpa · Government high school · U, 7-12
1,133 students · ICSEA 990
Loxton High School
Loxton · Government high school · 7-12
559 students · ICSEA 989
Underdale High School
Underdale · Government high school · 7-12
629 students · ICSEA 1000
Frequently asked questions
Is Willunga High School a public or private school?
Willunga High School is a public (government) school run by the South Australia education department.
What year levels does Willunga High School offer?
Willunga High School offers U, 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Willunga High School?
In 2025, Willunga High School had 693 enrolled students (359 girls, 334 boys), a change of -30% over five years.
What is the ICSEA of Willunga High School?
Willunga High School has an ICSEA (Index of Community Socio-Educational Advantage) of 994. 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 Willunga High School rank in SA?
Willunga High School ranks 52nd of 84 secondary schools in South Australia on the Success Index (40.0/100), and 950th of 1,472 nationally.
What is the student-to-teacher ratio at Willunga High School?
Willunga High School has about 14.6 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Willunga High School?
In 2025, Willunga High School had 128 students in Year 7 and 110 in Year 12.
Is Willunga High School co-ed?
Yes. Willunga High School is a co-educational school enrolling both girls and boys.
What other schools are near Willunga High School?
There are 10 other schools within 15 km of Willunga 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 Willunga High School?
The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 45 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.