St Marks Sen National School
Tallaght, Dublin
Key facts
- DEIS
- Mixed
- Pupils enrolled
- 497 larger than the median Irish primary school (123 pupils)
- Girls and boys
- 241 girls, 256 boys
- Ethos
- Catholic
- Teaching through Irish
- No subjects through Irish
- Roll number
- 19390U the Department of Education reference for this school
School details
Location
About
St Mark’s Senior National School is an inclusive Catholic primary school situated in Tallaght, Dublin 24. The school’s ethos centres on providing a safe, nurturing environment that challenges pupils academically while fostering lifelong and lifewide learning. Emphasising high support and high expectations, the curriculum balances rigorous academic standards with a strong focus on personal development, encouraging students to become responsible environmental citizens and active members of the community. The school’s programme extends beyond the classroom, offering a broad range of extra‑curricular activities such as choir, GAA, soccer, athletics, basketball and chess, which support physical health, teamwork and creative expression. Facilities are designed to accommodate these pursuits, with dedicated spaces for sport, music and collaborative learning. The school’s motto, “Ar scáth a chéile a mhaireann na daoine” (In the shelter of each other, people live), reflects its commitment to mutual respect, cultural diversity and the holistic development of every child.
Applying to St Marks Sen National 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.
School-published admissions links
These links come from the school's published admissions material. Check the school year shown before relying on dates or place numbers.
National term dates 2026/27
Irish schools follow a standardised school year, so these nationwide primary school dates apply broadly to St Marks Sen National 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: Thu 18 Feb – Fri 19 Feb 2027 (post-primary schools: Mon 15 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 St Marks Sen National School
How many pupils attend St Marks Sen National School?
St Marks Sen National School has 497 pupils enrolled, 241 girls and 256 boys. That makes it larger than the median Irish primary school, which has 123 pupils.
Is St Marks Sen National School a DEIS school?
Yes. St Marks Sen National 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 St Marks Sen National School?
St Marks Sen National School has a Catholic ethos. It is a mixed primary school.