Thornbury High School
Updated Oct 2026 · ACARA 2025Thornbury, Victoria 3071 · Darebin LGA
About Thornbury High School
Thornbury High School is a public high school located in Thornbury, Victoria (3071), within the Darebin local government area. It caters for students from 7 to 12 and in 2025 enrolled 1,123 students (531 girls and 592 boys).
Thornbury High School has an ICSEA value of 1067, indicating above-average socio-educational advantage. That places it in the 74th percentile of Australian schools. 33% of students come from the top socio-educational quarter and 17% from the bottom quarter.
The school employs 103 teachers (91.7 full-time equivalent) and 61 non-teaching staff, giving a student-to-teacher ratio of about 11.9 to 1. Enrolments have grown by 4% over the past five years.
On the Success Index, Thornbury High School scores 77.4 out of 100, placing it in the top 10% of secondary schools nationally and 46th of 348 secondary schools in VIC (4th of 7 in the Darebin area).
VCE results (2025)
Published by the Victorian Curriculum and Assessment Authority. Study scores range from 0 to 50 with a state mean of 30; a score of 40 or above is in roughly the top 9% statewide.
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1067
- Students in the top advantage quarter (15%)33% of students
- Teacher resourcing (students per teacher) (15%)11.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)+4% enrolments since 2020 (area median -9%)
- ICSEA trend (5 years) (10%)+26 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 Thornbury High School's 1,123 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Thornbury High School have changed over the past decade.
Free academic assessment
Is your child on track at Thornbury 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 Hawthorn
Schools near Thornbury High School
Closest schools by straight-line distance, with their Success Index.
Virtual School Victoria
Thornbury · Government combined · Prep-12
6,248 students · ICSEA 1073 · 618 m away
Holy Spirit School
Thornbury · Catholic primary · Prep-6
129 students · ICSEA 1107 · 929 m away
Penders Grove Primary School
Thornbury · Government primary · Prep-6
160 students · ICSEA 1021 · 987 m away
St Bernadette's School
Ivanhoe · Catholic primary · Prep-6
191 students · ICSEA 1149 · 1.1 km away
Waratah Special Developmental School
Bellfield · Government special · U
73 students · ICSEA 965 · 1.3 km away
Wales Street Primary School
Thornbury · Government primary · Prep-6
616 students · ICSEA 1140 · 1.5 km away
Northern College of the Arts and Technology
Preston · Government high school · 10-12
367 students · ICSEA 1060 · 1.8 km away
Preston South Primary School
Preston · Government primary · Prep-6
397 students · ICSEA 1127 · 1.8 km away
Ivanhoe Primary School
Ivanhoe · Government primary · Prep-6
557 students · ICSEA 1157 · 1.9 km away
St Mary's School
Thornbury · Catholic primary · Prep-6
113 students · ICSEA 1089 · 2.1 km away
Similar schools
Government secondary schools in VIC with a comparable ICSEA.
Doncaster Secondary College
Doncaster · Government high school · 7-12
1,157 students · ICSEA 1067
Frankston High School
Frankston · Government high school · 7-12
1,964 students · ICSEA 1067
Parkdale Secondary College
Mordialloc · Government high school · 7-12
1,418 students · ICSEA 1067
Mount Alexander 7-12 College
Flemington · Government high school · 7-12
827 students · ICSEA 1069
St Helena Secondary College
Eltham North · Government high school · 7-12
1,414 students · ICSEA 1065
Maribyrnong College
Maribyrnong · Government high school · 7-12
1,361 students · ICSEA 1064
Frequently asked questions
Is Thornbury High School a public or private school?
Thornbury High School is a public (government) school run by the Victoria education department.
What year levels does Thornbury High School offer?
Thornbury High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Thornbury High School?
In 2025, Thornbury High School had 1,123 enrolled students (531 girls, 592 boys), a change of 4% over five years.
What is the ICSEA of Thornbury High School?
Thornbury High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1067. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Thornbury High School rank in VIC?
Thornbury High School ranks 46th of 348 secondary schools in Victoria on the Success Index (77.4/100), and 104th of 1,472 nationally.
What is the student-to-teacher ratio at Thornbury High School?
Thornbury High School has about 11.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
What are the VCE results at Thornbury High School?
In 2025, Thornbury High School recorded a median VCE study score of 30 with 4.9% of study scores at 40 or above, from 231 students enrolled in at least one VCE study. Source: VCAA Senior Secondary Completion and Achievement Information.
How big is the Year 7 cohort at Thornbury High School?
In 2025, Thornbury High School had 231 students in Year 7 and 149 in Year 12.
Is Thornbury High School co-ed?
Yes. Thornbury High School is a co-educational school enrolling both girls and boys.
What other schools are near Thornbury High School?
There are 10 other schools within 15 km of Thornbury 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 Thornbury High School?
The closest Success Tutoring centre is Success Tutoring Hawthorn, about 7.9 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.