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Catholic schoolHigh school Years 7-12Co-edMajor Cities

Gleeson College

Updated Oct 2026 · ACARA 2025Golden Grove, South Australia 5125 · Tea Tree Gully LGA

68.3/ 100
Success Index
Top 25%

#17 of 84 high schools in SA
#318 of 1,472 nationally

How is this calculated?
Students
941
+22% over 5 years
ICSEA
1055
70th percentile nationally
Students per teacher
11.7
80.0 FTE teachers
Year range
7-12

About Gleeson College

Gleeson College is a catholic high school located in Golden Grove, South Australia (5125), within the Tea Tree Gully local government area. It caters for students from 7 to 12 and in 2025 enrolled 941 students (485 girls and 456 boys). The school is affiliated with Catholic Education South Australia.

Gleeson College has an ICSEA value of 1055, indicating above-average socio-educational advantage. That places it in the 70th percentile of Australian schools. 20% of students come from the top socio-educational quarter and 15% from the bottom quarter.

The school employs 86 teachers (80.0 full-time equivalent) and 35 non-teaching staff, giving a student-to-teacher ratio of about 11.7 to 1. Enrolments have grown by 22% over the past five years.

On the Success Index, Gleeson College scores 68.3 out of 100, placing it in the top 25% of secondary schools nationally and 17th of 84 secondary schools in SA (1st of 5 in the Tea Tree Gully area).

Success Index breakdown

Each component is a percentile against schools of the same type across Australia.

  • Socio-educational advantage (ICSEA) (50%)ICSEA 1055
  • Students in the top advantage quarter (15%)20% of students
  • Teacher resourcing (students per teacher) (15%)11.7 students per teacher
  • Enrolment growth vs local area (5 years) (10%)+22% enrolments since 2020 (area median +24%)
  • ICSEA trend (5 years) (10%)+13 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.

Gleeson College
Bottom quarterLower middleUpper middleTop quarter
Girls
485
Boys
456
Language background other than English
7%
Indigenous students
1%

Enrolments by year level

How Gleeson College's 941 students are spread across year levels in 2025.

Year 7 cohort
183
Year 12 cohort
118

Enrolment trend

How enrolments at Gleeson College have changed over the past decade.

5247569882015: 662 students2016: 627 students2017: 582 students2018: 656 students2019: 720 students2020: 771 students2021: 772 students2022: 815 students2023: 862 students2024: 915 students2025: 941 students201520172019202120232025
Total enrolments by year. Source: ACARA school profile data.

Free academic assessment

Is your child on track at Gleeson 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.

  • Personalised learning plan mapped to the Australian Curriculum
  • English & Maths from Kindergarten to Year 12
  • Flexible memberships, no lock-in contracts
  • Your nearest centre: Success Tutoring Windsor Gardens

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Schools near Gleeson College

Closest schools by straight-line distance, with their Success Index.

Similar schools

Catholic secondary schools in SA with a comparable ICSEA.

Frequently asked questions

Is Gleeson College a public or private school?

Gleeson College is a Catholic school, which makes it a non-government (private) school affiliated with Catholic Education South Australia.

What year levels does Gleeson College offer?

Gleeson College offers 7 to 12. It is classified by ACARA as a secondary school.

How many students attend Gleeson College?

In 2025, Gleeson College had 941 enrolled students (485 girls, 456 boys), a change of 22% over five years.

What is the ICSEA of Gleeson College?

Gleeson College has an ICSEA (Index of Community Socio-Educational Advantage) of 1055. The national average is 1000, so this indicates above-average socio-educational advantage. ICSEA reflects the school community, not teaching quality.

How does Gleeson College rank in SA?

Gleeson College ranks 17th of 84 secondary schools in South Australia on the Success Index (68.3/100), and 318th of 1,472 nationally.

What is the student-to-teacher ratio at Gleeson College?

Gleeson College has about 11.7 students per full-time-equivalent teacher, based on 2025 ACARA staffing data.

How big is the Year 7 cohort at Gleeson College?

In 2025, Gleeson College had 183 students in Year 7 and 118 in Year 12.

Is Gleeson College co-ed?

Yes. Gleeson College is a co-educational school enrolling both girls and boys.

What other schools are near Gleeson College?

There are 10 other schools within 15 km of Gleeson 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 Gleeson College?

The closest Success Tutoring centre is Success Tutoring Windsor Gardens, about 8.8 km from the school. Success Tutoring offers a free academic assessment to identify your child's strengths and learning gaps before any sessions begin.