Coláiste Oiriall
Coláiste Oiriall is a secondary school irish-medium in Monaghan. 402 pupils, Multi-denominational ethos.
The facts
| Type | Secondary school |
|---|---|
| Gender | Mixed |
| Ethos | Multi-denominational |
| Patron | Cavan & Monaghan ETB |
| Fees | Free |
| Enrolment | 402 (179 boys, 223 girls) 2025/26 |
| Language of instruction | Irish Medium School |
| Roll number | 76091I |
| Eircode | H18W897 |
| Address | Cnoc an Chonnaidh, Br. Ard Mhacha, Muineachán, Co. Mhuineacháin |
Special classes
The NCSE lists no special class at this school for the coming year.
The area around this school
School planning area: Monaghan. This is how the Department plans where to build capacity. It is not a catchment.
Local house prices: the median residential sale price in Eircode district H18 (Monaghan) was €260,000 in 2025. That is up 73.3% since 2020. CSO figures for the whole district, not the streets beside the school.
Area profile: the Pobal HP Deprivation Index rates Monaghan Rural at -5.36 (Marginally Below Average), where 0 is the national average. 33% of adults there hold a third-level qualification.
Contact
| Principal | Annette Ní Thuathail |
|---|---|
| Phone | 04772344 |
| eolas@oiriall.ie | |
| Local authority | Monaghan County Council |
Other schools in Monaghan
- Beech Hill College Secondary school, Monaghan
- Corcaghan N S Primary school, Monaghan
- Corr A Chrainn National School Primary school, Monaghan
- Deravoy National School Primary school, Monaghan
- Drumacruttin N S Primary school, Monaghan
- Edenmore N.S. Primary school, Monaghan
- Gaelscoil Ultain Primary school, Monaghan
- Knockconnon N S Primary school, Monaghan
- Monaghan Collegiate School Secondary school, Monaghan
- Monaghan Model School Primary school, Monaghan
- Scoil Bhrighde Primary school, Monaghan
- Scoil Mhichil Primary school, Monaghan
How we know
DoE Schools GIS 2026 (CC BY 4.0) — checked 2026-08-27.