Hornsby High School
Updated Oct 2026 · ACARA 2025Asquith, New South Wales 2077 · Hornsby LGA
About Hornsby High School
Hornsby High School is a public boys' high school located in Asquith, New South Wales (2077), within the Hornsby local government area. It caters for students from 7 to 12 and in 2025 enrolled 542 students.
Hornsby High School has an ICSEA value of 1045, indicating a socio-educational profile close to the national average of 1000. That places it in the 66th percentile of Australian schools. 19% of students come from the top socio-educational quarter and 16% from the bottom quarter.
The school employs 44 teachers (48.6 full-time equivalent) and 10 non-teaching staff, giving a student-to-teacher ratio of about 11.1 to 1. Enrolments have fallen by 8% over the past five years.
On the Success Index, Hornsby High School scores 61.2 out of 100, placing it in the top 50% of secondary schools nationally and 194th of 539 secondary schools in NSW (11th of 11 in the Hornsby area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1045
- Students in the top advantage quarter (15%)19% of students
- Teacher resourcing (students per teacher) (15%)11.1 students per teacher
- Enrolment growth vs local area (5 years) (10%)-8% enrolments since 2020 (area median +1%)
- ICSEA trend (5 years) (10%)-5 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 Hornsby High School's 542 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Hornsby High School have changed over the past decade.
Free academic assessment
Is your child on track at Hornsby High School?
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Schools near Hornsby High School
Closest schools by straight-line distance, with their Success Index.
Asquith High School
Asquith · Government high school · 7-12
669 students · ICSEA 1082 · 970 m away
St Patrick's Catholic Primary School
Asquith · Catholic primary · K-6
223 students · ICSEA 1124 · 1.1 km away
Hornsby North Public School
Hornsby · Government primary · K-6
937 students · ICSEA 1148 · 1.1 km away
Asquith Public School
Asquith · Government primary · K-6
384 students · ICSEA 1102 · 1.1 km away
Blue Gum Community School
Hornsby · Independent primary · K-2
21 students · ICSEA 1105 · 1.6 km away
Hornsby Girls High School
Hornsby · Government high school · 7-12
722 students · ICSEA 1209 · 1.6 km away
Barker College
Hornsby · Independent combined · K-12
2,856 students · ICSEA 1166 · 1.9 km away
Waitara Public School
Wahroonga · Government primary · K-6
972 students · ICSEA 1148 · 1.9 km away
Marri Mittigar School
Hornsby · Independent special · K-8
28 students · ICSEA 984 · 2.1 km away
Clarke Road School
Hornsby · Government special · U
61 students · ICSEA 1063 · 2.3 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Kincumber High School
Kincumber · Government high school · 7-12
1,002 students · ICSEA 1045
Menai High School
Menai · Government high school · 7-12
1,062 students · ICSEA 1046
Galston High School
Galston · Government high school · 7-12
570 students · ICSEA 1044
Blacktown Girls High School
Blacktown · Government high school · 7-12
1,080 students · ICSEA 1046
Terrigal High School
Terrigal · Government high school · 7-12
847 students · ICSEA 1044
Blakehurst High School
Blakehurst · Government high school · 7-12
1,013 students · ICSEA 1043
Frequently asked questions
Is Hornsby High School a public or private school?
Hornsby High School is a public (government) school run by the New South Wales education department.
What year levels does Hornsby High School offer?
Hornsby High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Hornsby High School?
In 2025, Hornsby High School had 542 enrolled students (0 girls, 542 boys), a change of -8% over five years.
What is the ICSEA of Hornsby High School?
Hornsby High School has an ICSEA (Index of Community Socio-Educational Advantage) of 1045. 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 Hornsby High School rank in NSW?
Hornsby High School ranks 194th of 539 secondary schools in New South Wales on the Success Index (61.2/100), and 488th of 1,472 nationally.
What is the student-to-teacher ratio at Hornsby High School?
Hornsby High School has about 11.1 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Hornsby High School?
In 2025, Hornsby High School had 98 students in Year 7 and 80 in Year 12.
Is Hornsby High School co-ed?
No. Hornsby High School is a boys' school.
What other schools are near Hornsby High School?
There are 10 other schools within 15 km of Hornsby 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 Hornsby High School?
The closest Success Tutoring centre is Success Tutoring Hornsby, about 1.1 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.