Gilroy Catholic College
Updated Oct 2026 · ACARA 2025Castle Hill, New South Wales 2154 · The Hills LGA
About Gilroy Catholic College
Gilroy Catholic College is a catholic high school located in Castle Hill, New South Wales (2154), within the The Hills local government area. It caters for students from 7 to 12 and in 2025 enrolled 1,307 students (666 girls and 641 boys). The school is affiliated with Catholic Schools NSW.
Gilroy Catholic College has an ICSEA value of 1096, indicating above-average socio-educational advantage. That places it in the 83rd percentile of Australian schools. 35% of students come from the top socio-educational quarter and 6% from the bottom quarter.
The school employs 98 teachers (92.0 full-time equivalent) and 33 non-teaching staff, giving a student-to-teacher ratio of about 14.2 to 1. Enrolments have remained steady over the past five years.
On the Success Index, Gilroy Catholic College scores 73.4 out of 100, placing it in the top 25% of secondary schools nationally and 68th of 539 secondary schools in NSW (4th of 9 in the The Hills area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1096
- Students in the top advantage quarter (15%)35% of students
- Teacher resourcing (students per teacher) (15%)14.2 students per teacher
- Enrolment growth vs local area (5 years) (10%)+2% enrolments since 2020 (area median +0%)
- ICSEA trend (5 years) (10%)+18 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 Gilroy Catholic College's 1,307 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Gilroy Catholic College have changed over the past decade.
Free academic assessment
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Schools near Gilroy Catholic College
Closest schools by straight-line distance, with their Success Index.
St Gabriel's School for students with special needs
Castle Hill · Independent special · U
207 students · ICSEA 1069 · 420 m away
Excelsior Public School
Castle Hill · Government primary · K-6
561 students · ICSEA 1150 · 577 m away
Baulkham Hills High School
Baulkham Hills · Government high school · 7-12
1,223 students · ICSEA 1203 · 1.2 km away
Baulkham Hills North Public School
Baulkham Hills · Government primary · K-6
876 students · ICSEA 1130 · 1.3 km away
Castle Hill High School
Castle Hill · Government high school · 7-12
1,845 students · ICSEA 1121 · 1.5 km away
Castle Hill Public School
Castle Hill · Government primary · K-6
970 students · ICSEA 1128 · 1.6 km away
St Michael's Primary School
Baulkham Hills · Catholic primary · K-6
696 students · ICSEA 1113 · 1.6 km away
St Bernadette's Primary School
Castle Hill · Catholic primary · K-6
479 students · ICSEA 1145 · 1.7 km away
Crestwood High School
Baulkham Hills · Government high school · 7-12
1,022 students · ICSEA 1103 · 2.0 km away
Crestwood Public School
Baulkham Hills · Government primary · K-6
633 students · ICSEA 1139 · 2.5 km away
Similar schools
Catholic secondary schools in NSW with a comparable ICSEA.
St Francis Xavier's College
Hamilton · Catholic high school · 7-12
959 students · ICSEA 1096
St John XXIII Catholic College (Secondary)
Stanhope Gardens · Catholic high school · 7-12
1,166 students · ICSEA 1097
St Ursula's College
Kingsgrove · Catholic high school · 7-12
1,110 students · ICSEA 1095
St Patrick's College Sutherland
Sutherland · Catholic high school · 7-12
1,227 students · ICSEA 1093
Marcellin College
Randwick · Catholic high school · 7-12
964 students · ICSEA 1100
St Paul's Catholic College
Manly · Catholic high school · 7-12
468 students · ICSEA 1091
Frequently asked questions
Is Gilroy Catholic College a public or private school?
Gilroy Catholic College is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Schools NSW.
What year levels does Gilroy Catholic College offer?
Gilroy Catholic College offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Gilroy Catholic College?
In 2025, Gilroy Catholic College had 1,307 enrolled students (666 girls, 641 boys), a change of 2% over five years.
What is the ICSEA of Gilroy Catholic College?
Gilroy Catholic College has an ICSEA (Index of Community Socio-Educational Advantage) of 1096. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.
How does Gilroy Catholic College rank in NSW?
Gilroy Catholic College ranks 68th of 539 secondary schools in New South Wales on the Success Index (73.4/100), and 196th of 1,472 nationally.
What is the student-to-teacher ratio at Gilroy Catholic College?
Gilroy Catholic College has about 14.2 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Gilroy Catholic College?
In 2025, Gilroy Catholic College had 239 students in Year 7 and 192 in Year 12.
Is Gilroy Catholic College co-ed?
Yes. Gilroy Catholic College is a co-educational school enrolling both girls and boys.
What other schools are near Gilroy Catholic College?
There are 10 other schools within 15 km of Gilroy Catholic 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 Gilroy Catholic College?
The closest Success Tutoring centre is Success Tutoring Baulkham Hills, about 2.2 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.