Trinity College
Updated Oct 2026 · ACARA 2025Gladstone, Queensland 4680 · Gladstone LGA
#136 of 275 combined schools in QLD
#678 of 1,259 nationally
About Trinity College
Trinity College is an independent combined (K–12) school located in Gladstone, Queensland (4680), within the Gladstone local government area. It caters for students from Prep to 12 and in 2025 enrolled 607 students (314 girls and 293 boys). The school is affiliated with Independent Schools Queensland.
Trinity College has an ICSEA value of 1034, indicating a socio-educational profile close to the national average of 1000. That places it in the 61st percentile of Australian schools. 21% of students come from the top socio-educational quarter and 21% from the bottom quarter.
The school employs 53 teachers (43.7 full-time equivalent) and 52 non-teaching staff, giving a student-to-teacher ratio of about 13.9 to 1. Enrolments have grown by 20% over the past five years.
On the Success Index, Trinity College scores 48.8 out of 100, placing it in the top 50% of combined schools nationally and 136th of 275 combined schools in QLD (2nd of 6 in the Gladstone area).
Success Index breakdown
Each component is a percentile against schools of the same type across Australia.
- Socio-educational advantage (ICSEA) (50%)ICSEA 1034
- Students in the top advantage quarter (15%)21% of students
- Teacher resourcing (students per teacher) (15%)13.9 students per teacher
- Enrolment growth vs local area (5 years) (10%)+20% enrolments since 2020 (area median +12%)
- ICSEA trend (5 years) (10%)+0 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 College's 607 students are spread across year levels in 2025.
Enrolment trend
How enrolments at Trinity College have changed over the past decade.
Free academic assessment
Is your child on track at Trinity 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 College
Closest schools by straight-line distance, with their Success Index.
Kin Kora State School
Kin Kora · Government primary · Prep-6
783 students · ICSEA 929 · 863 m away
Gladstone West State School
West Gladstone · Government primary · Prep-6
642 students · ICSEA 938 · 1.3 km away
Toolooa State High School
South Gladstone · Government high school · 7-12
1,165 students · ICSEA 950 · 1.4 km away
Chanel College
Gladstone · Catholic high school · 7-12
854 students · ICSEA 1031 · 1.6 km away
Gladstone South State School
South Gladstone · Government primary · Prep-6
458 students · ICSEA 897 · 1.7 km away
Gladstone State High School
West Gladstone · Government high school · 7-12
1,239 students · ICSEA 938 · 2.2 km away
Rosella Park School
West Gladstone · Government special · Prep-12
87 students · ICSEA 942 · 2.3 km away
Star of the Sea Catholic Primary School
Gladstone · Catholic primary · Prep-6
339 students · ICSEA 1044 · 2.6 km away
Gladstone Central State School
Gladstone Central · Government primary · Prep-6
356 students · ICSEA 989 · 3.2 km away
Clinton State School
Clinton · Government primary · Prep-6
703 students · ICSEA 914 · 3.6 km away
Similar schools
Independent combined schools in QLD with a comparable ICSEA.
Mawarra Independent School
Kybong · Independent combined · Prep-10
44 students · ICSEA 1033
Hills International College
Jimboomba · Independent combined · Prep-12
768 students · ICSEA 1036
St James Lutheran College
Urraween · Independent combined · Prep-12
754 students · ICSEA 1038
Darling Downs Adventist College
Toowoomba · Independent combined · Prep-12
362 students · ICSEA 1038
Bundaberg Christian College
Bundaberg · Independent combined · Prep-12
845 students · ICSEA 1039
Glasshouse Christian College
Beerwah · Independent combined · Prep-12
1,180 students · ICSEA 1039
Frequently asked questions
Is Trinity College a public or private school?
Trinity College is a Independent school, which makes it a non-government (private) school affiliated with Independent Schools Queensland.
What year levels does Trinity College offer?
Trinity College offers Prep to 12. It is classified by ACARA as a combined school.
How many students attend Trinity College?
In 2025, Trinity College had 607 enrolled students (314 girls, 293 boys), a change of 20% over five years.
What is the ICSEA of Trinity College?
Trinity College has an ICSEA (Index of Community Socio-Educational Advantage) of 1034. 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 College rank in QLD?
Trinity College ranks 136th of 275 combined schools in Queensland on the Success Index (48.8/100), and 678th of 1,259 nationally.
What is the student-to-teacher ratio at Trinity College?
Trinity College has about 13.9 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.
How big is the Year 7 cohort at Trinity College?
In 2025, Trinity College had 47 students in Year 7 and 36 in Year 12.
Is Trinity College co-ed?
Yes. Trinity College is a co-educational school enrolling both girls and boys.
What other schools are near Trinity College?
There are 10 other schools within 15 km of Trinity 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 College?
The closest Success Tutoring centre is Success Tutoring North Lakes, about 413 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.