Enrolment
Girls vs boys enrolment
669
reported total enrolments
339 girls
330 boys
50.7% girls49.3% boys
Trinity College Senior reports 669 total enrolments, including 339 girls and 330 boys. The reported enrolment mix is 50.7% girls and 49.3% boys.
2025 Australia school profile data
Trinity College Senior
Trinity College Senior is a independent secondary school in Evanston South, South Australia, with 669 reported enrolments, a student-teacher ratio of 11.4:1, and an ICSEA percentile of 58.
Evanston South, SA 5116IndependentSecondary11-12
IndependentSecondaryCo-educational
Quick school snapshot
What stands out in the profile
School model
Trinity College Senior is listed as Independent and Secondary, with a reported year range of 11-12.
Enrolment size
The school reports 669 total enrolments, including 339 girls and 330 boys where available.
ICSEA context
The ICSEA value is 1,025, with percentile 58 in the current dataset.
Gender profile
The gender type is Co-educational, with a reported mix of 50.7% girls and 49.3% boys.
Staff ratio
The student-teacher ratio is 11.4:1, based on 58.8 FTE teaching staff where available.
Local area
The campus is in Evanston South, South Australia, within Gawler.
Profile signals
School profile dashboard
The main student and context indicators are shown visually so the profile reads like a school intelligence page, not a spreadsheet.
Trinity College Senior profile summary
Trinity College Senior is listed as a independent secondary school in Evanston South, South Australia. The profile reports 669 total enrolments, an ICSEA value of 1,025, and a student-teacher ratio of 11.4:1 where available. The reported year range is 11-12, and the campus sits within Gawler local government area.
Socio-educational
ICSEA percentile
58
percentile where available
ICSEA
1,025
Trinity College Senior sits at the 58 ICSEA percentile in the reported dataset.
SEA quarters
Socio-educational distribution
Bottom
24%
Lower-middle
35%
Upper-middle
27%
Top
13%
The socio-educational distribution lists 24% in the bottom quarter, 35% in the lower-middle quarter, 27% in the upper-middle quarter, and 13% in the top quarter.
Staff
Staff profile summary
Teaching staff
68
FTE teaching
58.8
Non-teaching
90
Student-teacher
11.4:1
The profile reports 68 teaching staff and 90 non-teaching staff, with a student-teacher ratio of 11.4:1.
Location
Campus location and area context
Location context combines suburb, postcode, administrative areas and a direct maps link where data is available.
- Suburb
- Evanston South
- Postcode
- 5116
- State
- South Australia
- Local government area
- Gawler
- Statistical Area Level 2
- Gawler - South
- Statistical Area Level 3
- Gawler - Two Wells
- Statistical Area Level 4
- Adelaide - North
- Remoteness area
- Major Cities
Governance
Governance and official links
Official school and governing body links are included when the dataset provides them.
- Governing body
- Association of Independent Schools of SA
- Governing body URL
- Visit website
- School URL
- Visit school website
- Campus type
- School Single Entity
- Reporting description
- Individual Reporting
Community
Student community profile
Student community indicators are reported as percentages where available.
- Indigenous enrolment
- 2%
- Language background other than English: yes
- 21%
- Language background other than English: no
- 79%
- Language background other than English: not stated
- 0%
Nearby
Nearby and similar schools
Similar schools are selected from the same suburb first, then from the same local government area where needed.
IndependentCombined
Trinity College North
Evanston South, SA 5116
Same suburb
- Enrol.
- 914
- ICSEA
- 1,040
- Ratio
- 15.6:1
IndependentCombined
Trinity College South
Evanston South, SA 5116
Same suburb
- Enrol.
- 957
- ICSEA
- 1,039
- Ratio
- 15.5:1
GovernmentPrimary
Evanston Gardens Primary School
Evanston Gardens, SA 5116
Same local area
- Enrol.
- 263
- ICSEA
- 943
- Ratio
- 14.7:1
GovernmentCombined
Gawler and District College B-12
Evanston, SA 5116
Same local area
- Enrol.
- 1.2K
- ICSEA
- 932
- Ratio
- 13.8:1
GovernmentPrimary
Gawler East Primary School
Gawler East, SA 5118
Same local area
- Enrol.
- 374
- ICSEA
- 987
- Ratio
- 15.6:1
GovernmentPrimary
Gawler Primary School
Gawler, SA 5118
Same local area
- Enrol.
- 168
- ICSEA
- 954
- Ratio
- 13.8:1
FAQ
Questions about Trinity College Senior
How many students attend Trinity College Senior?
Trinity College Senior has 669 reported total enrolments. The student profile lists 339 girls and 330 boys where gender enrolment fields are available.
What type of school is Trinity College Senior?
Trinity College Senior is listed as a Independent school with school type Secondary. The reported year range is 11-12.
Where is Trinity College Senior located?
Trinity College Senior is located in Evanston South, SA 5116. The local government area is Gawler.
What is the ICSEA value of Trinity College Senior?
The ICSEA value for Trinity College Senior is 1,025 and the ICSEA percentile is 58. If either value is missing in the source data, it is shown as Not available rather than zero.
Is Trinity College Senior boys-only, girls-only or co-educational?
Trinity College Senior is listed as Co-educational. The reported gender mix is 50.7% girls and 49.3% boys where percentage fields are available.
Data note
Built from structured 2025 school profile data
This page uses structured 2025 Australian school profile data. Some values may be unavailable where they are not reported in the source dataset. Profile pages are designed to make enrolment, ICSEA, location and school context easier to compare.