Colo High School
Updated Oct 2026 · ACARA 2025North Richmond, New South Wales 2754 · Hawkesbury LGA
#341 of 539 high schools in NSW
#966 of 1,472 nationally
About Colo High School
Colo High School is a public high school located in North Richmond, New South Wales (2754), within the Hawkesbury local government area. It caters for students from 7 to 12 and in 2025 enrolled 807 students (386 girls and 421 boys).
Colo 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. 11% of students come from the top socio-educational quarter and 29% from the bottom quarter.
The school employs 58 teachers (58.1 full-time equivalent) and 16 non-teaching staff, giving a student-to-teacher ratio of about 13.9 to 1. Enrolments have fallen by 9% over the past five years.
On the Success Index, Colo High School scores 39.5 out of 100, placing it in the lower 50% of secondary schools nationally and 341st of 539 secondary schools in NSW (3rd of 5 in the Hawkesbury 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%)11% of students
- Teacher resourcing (students per teacher) (15%)13.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)-9% enrolments since 2020 (area median -1%)
- ICSEA trend (5 years) (10%)-11 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 Colo High School's 807 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Colo High School have changed over the past decade.
Free academic assessment
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Schools near Colo High School
Closest schools by straight-line distance, with their Success Index.
Richmond North Public School
North Richmond · Government primary · K-6
309 students · ICSEA 984 · 1.5 km away
Kurmond Public School
Kurmond · Government primary · K-6
125 students · ICSEA 982 · 2.6 km away
Kuyper Christian School
Kurrajong · Independent combined · K-12
201 students · ICSEA 1032 · 2.8 km away
Kurrajong Public School
Kurrajong · Government primary · K-6
139 students · ICSEA 1051 · 4.5 km away
Grose View Public School
Grose Vale · Government primary · K-6
265 students · ICSEA 1005 · 4.9 km away
Hobartville Public School
Hobartville · Government primary · K-6
355 students · ICSEA 959 · 4.9 km away
Richmond High School
Richmond · Government high school · 7-12
750 students · ICSEA 987 · 5.0 km away
Hawkesbury Independent School
Kurrajong · Independent primary · K-6
77 students · ICSEA 1064 · 5.0 km away
Richmond Public School
Richmond · Government primary · K-6
298 students · ICSEA 1047 · 5.6 km away
St Monica's Primary School
Richmond · Catholic primary · K-6
252 students · ICSEA 1032 · 5.8 km away
Similar schools
Government secondary schools in NSW with a comparable ICSEA.
Pendle Hill High School
Wentworthville · Government high school · 7-12
692 students · ICSEA 1001
Kingsgrove North High School
Kingsgrove · Government high school · 7-12
1,020 students · ICSEA 1002
Holsworthy High School
Holsworthy · Government high school · 7-12
693 students · ICSEA 1000
Oran Park High School
Oran Park · Government high school · 7-12
1,579 students · ICSEA 1002
Wyndham College
Quakers Hill · Government high school · 11-12
378 students · ICSEA 1003
Beverly Hills Girls High School
Beverly Hills · Government high school · 6-12
1,003 students · ICSEA 1003
Frequently asked questions
Is Colo High School a public or private school?
Colo High School is a public (government) school run by the New South Wales education department.
What year levels does Colo High School offer?
Colo High School offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Colo High School?
In 2025, Colo High School had 807 enrolled students (386 girls, 421 boys), a change of -9% over five years.
What is the ICSEA of Colo High School?
Colo 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 Colo High School rank in NSW?
Colo High School ranks 341st of 539 secondary schools in New South Wales on the Success Index (39.5/100), and 966th of 1,472 nationally.
What is the student-to-teacher ratio at Colo High School?
Colo High School has about 13.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Colo High School?
In 2025, Colo High School had 146 students in Year 7 and 91 in Year 12.
Is Colo High School co-ed?
Yes. Colo High School is a co-educational school enrolling both girls and boys.
What other schools are near Colo High School?
There are 10 other schools within 15 km of Colo 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 Colo High School?
The closest Success Tutoring centre is Success Tutoring Riverstone, about 19 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.