Trinity Catholic College
Updated Oct 2026 · ACARA 2025Auburn, New South Wales 2144 · Cumberland LGA
About Trinity Catholic College
Trinity Catholic College is a catholic high school located in Auburn, New South Wales (2144), within the Cumberland local government area. It caters for students from 7 to 12 and in 2025 enrolled 1,313 students (644 girls and 669 boys). The school is affiliated with Catholic Schools NSW.
Trinity Catholic College has an ICSEA value of 1016, indicating a socio-educational profile close to the national average of 1000. That places it in the 54th percentile of Australian schools. 13% of students come from the top socio-educational quarter and 31% from the bottom quarter.
The school employs 112 teachers (103.1 full-time equivalent) and 41 non-teaching staff, giving a student-to-teacher ratio of about 12.7 to 1. Enrolments have grown by 4% over the past five years.
On the Success Index, Trinity Catholic College scores 55.1 out of 100, placing it in the top 50% of secondary schools nationally and 238th of 539 secondary schools in NSW (4th of 13 in the Cumberland area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1016
- Students in the top advantage quarter (15%)13% of students
- Teacher resourcing (students per teacher) (15%)12.7 students per teacher
- Enrolment growth vs local area (5 years) (10%)+4% enrolments since 2020 (area median +4%)
- ICSEA trend (5 years) (10%)+10 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 Trinity Catholic College's 1,313 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Trinity Catholic College have changed over the past decade.
Free academic assessment
Is your child on track at Trinity Catholic College?
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.
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Schools near Trinity Catholic College
Closest schools by straight-line distance, with their Success Index.
Alpha Omega Senior College
Auburn · Independent high school · 7-12
822 students · ICSEA 1111 · 144 m away
My Dream Australian Academy
Auburn · Independent combined · 5-10
140 students · ICSEA 991 · 233 m away
St John's Catholic Primary School
Auburn · Catholic primary · K-6
353 students · ICSEA 1032 · 262 m away
Sydney Adventist School - Auburn
Auburn · Independent primary · K-6
148 students · ICSEA 950 · 412 m away
Auburn Public School
Auburn · Government primary · K-6
486 students · ICSEA 983 · 491 m away
Al-Faisal College
Auburn · Independent combined · K-12
2,282 students · ICSEA 1077 · 508 m away
International Maarif Schools of Australia
Auburn · Independent combined · K-11
362 students · ICSEA 1043 · 805 m away
Auburn Girls High School
Auburn · Government high school · 7-12
854 students · ICSEA 966 · 909 m away
Auburn North Public School
Auburn · Government primary · K-6
645 students · ICSEA 1015 · 1.3 km away
Auburn West Public School
Auburn · Government primary · K-6
572 students · ICSEA 928 · 1.5 km away
Similar schools
Catholic secondary schools in NSW with a comparable ICSEA.
Patrician Brothers' College Blacktown
Blacktown · Catholic high school · 7-12
1,014 students · ICSEA 1016
St Joseph's Regional College
Port Macquarie · Catholic high school · 7-12
1,026 students · ICSEA 1017
St Francis De Sales Regional College
Leeton · Catholic high school · 7-12
666 students · ICSEA 1018
CathWest Innovation College
Mount Druitt · Catholic high school · 10-12
385 students · ICSEA 1013
Catherine McAuley Catholic College
Medowie · Catholic high school · 7-12
884 students · ICSEA 1019
Hennessy Catholic College
Young · Catholic high school · 7-12
426 students · ICSEA 1012
Frequently asked questions
Is Trinity Catholic College a public or private school?
Trinity Catholic College is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Schools NSW.
What year levels does Trinity Catholic College offer?
Trinity Catholic College offers 7 to 12. It is classified by ACARA as a secondary school.
How many students attend Trinity Catholic College?
In 2025, Trinity Catholic College had 1,313 enrolled students (644 girls, 669 boys), a change of 4% over five years.
What is the ICSEA of Trinity Catholic College?
Trinity Catholic College has an ICSEA (Index of Community Socio-Educational Advantage) of 1016. 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 Trinity Catholic College rank in NSW?
Trinity Catholic College ranks 238th of 539 secondary schools in New South Wales on the Success Index (55.1/100), and 624th of 1,472 nationally.
What is the student-to-teacher ratio at Trinity Catholic College?
Trinity Catholic College has about 12.7 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Trinity Catholic College?
In 2025, Trinity Catholic College had 246 students in Year 7 and 194 in Year 12.
Is Trinity Catholic College co-ed?
Yes. Trinity Catholic College is a co-educational school enrolling both girls and boys.
What other schools are near Trinity Catholic College?
There are 10 other schools within 15 km of Trinity 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 Trinity Catholic College?
The closest Success Tutoring centre is Success Tutoring Auburn, about 189 m from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.