Trinity Comprehensive School
DUBLIN 9, Dublin
Key facts
- DEIS
- Mixed
- Pupils enrolled
- 564 about the same size as the median Irish post-primary school (585 pupils)
- Girls and boys
- 282 girls, 282 boys
- Ethos
- Catholic
- Teaching through Irish
- No subjects taught through Irish
- Roll number
- 81017A the Department of Education reference for this school
School details
Location
About
Trinity Comprehensive School is a co-educational secondary school in Dublin 9. Enrolment stands at approximately 564 students. The school operates the Junior Cycle, Transition Year, Leaving Certificate, LCA and LCVP programmes. Facilities include five science labs, a home economics suite, two sports halls, an astroturf pitch, a gym, a music room, four computer rooms and a library with a full-time librarian. More recent additions include outdoor classrooms, a cinema room, an ASD room, a sensory room, two learning hubs and an apiary. The building is wheelchair accessible. The school describes its approach as experiential learning.
Applying to Trinity Comprehensive School
For a September 2027 place, a school's formal admissions process cannot begin before 1 October 2026. The school sets its own opening and closing dates in its annual admission notice.
National term dates 2026/27
Irish schools follow a standardised school year, so these nationwide post-primary school dates apply broadly to Trinity Comprehensive School. Individual schools set their own discretionary closure days, confirm exact dates with the school.
- October Mid-Term Break: Mon 26 Oct – Fri 30 Oct 2026
- Christmas Holidays: Wed 23 Dec 2026 – Tue 5 Jan 2027
- February Mid-Term Break: Mon 15 Feb – Fri 19 Feb 2027 (primary schools: Thu 18 Feb – Fri 19 Feb 2027)
- Easter Holidays: Mon 22 Mar – Sun 4 Apr 2027
Primary schools close for the last two days of the February mid-term week and may use discretionary days to take the full week, so their break can be shorter than post-primary schools'.
Frequently asked questions about Trinity Comprehensive School
How many pupils attend Trinity Comprehensive School?
Trinity Comprehensive School has 564 pupils enrolled, 282 girls and 282 boys. That makes it about the same size as the median Irish post-primary school, which has 585 pupils.
Is Trinity Comprehensive School a DEIS school?
Yes. Trinity Comprehensive School is part of DEIS, the Department of Education programme called Delivering Equality of Opportunity in Schools. DEIS schools serve communities at risk of educational disadvantage and receive additional supports, which can include smaller classes, extra teaching posts and funding for books and meals.
What is the ethos of Trinity Comprehensive School?
Trinity Comprehensive School has a Catholic ethos. It is a mixed post-primary school.