Threen National School
Castlerea, Roscommon
Key facts
- Mixed
- Pupils enrolled
- 35 smaller than the median Irish primary school (123 pupils)
- Girls and boys
- 16 girls, 19 boys
- Ethos
- Catholic
- Teaching through Irish
- No subjects through Irish
- Roll number
- 10967E the Department of Education reference for this school
School details
Location
About
Threen National School is a small, two‑teacher country school situated on the Galway road near Saint Caolin’s Church in the village of Trien, County Roscommon. The school provides a well‑equipped learning environment with two spacious classrooms, a dedicated learning‑support/resource room, a front hall, community room and kitchen, as well as modern IT facilities including interactive whiteboards, visualisers, broadband connectivity, laptops and iPads for pupil use. Outdoor provision comprises ample play space, an infant play area, a school garden and a pitch, supporting both physical activity and experiential learning. The school’s educational approach is inclusive and holistic, aiming to help each child reach their academic, spiritual, moral and social potential. A staged approach to special education needs is employed, with resource teaching and differentiated instruction to meet diverse learning requirements. Strong links with the local community encourage participation in GAA, soccer, drama, library and youth organisations, enriching pupils’ social development and preparing them for secondary education. The school’s ethos promotes effective communication, self‑worth and a lifelong thirst for learning, fostering confident members of society.
History
Threen National School was originally built in 1873 and later extended in 1931 and again in 2007. Located beside Saint Caolin’s Church, the school has evolved from a single‑room building to a facility with two large classrooms, specialised support rooms, community spaces and modern technological resources. Over the decades it has maintained strong ties to the local community, with many families spanning generations attending the school. Recent developments have added an infant play area, a school garden and a pitch, while IT infrastructure has been upgraded with interactive boards, visualisers, broadband and a fleet of laptops and iPads. The school celebrated its 150th anniversary in 2023.
Applying to Threen 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.
National term dates 2026/27
Irish schools follow a standardised school year, so these nationwide primary school dates apply broadly to Threen 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 Threen National School
How many pupils attend Threen National School?
Threen National School has 35 pupils enrolled, 16 girls and 19 boys. That makes it smaller than the median Irish primary school, which has 123 pupils.
Is Threen National School a DEIS school?
No. Threen National School is not part of DEIS, the Department of Education programme of additional supports for schools serving communities at risk of educational disadvantage. Not holding DEIS status says nothing about how good a school is, only about the profile of the community it serves.
What is the ethos of Threen National School?
Threen National School has a Catholic ethos. It is a mixed primary school.