St. Tiernan's College
St. Tiernan's College is a secondary school in Mayo. 253 pupils, Multi-denominational ethos, DEIS.
The facts
| Type | Secondary school |
|---|---|
| Gender | Mixed |
| Ethos | Multi-denominational |
| Patron | Mayo, Sligo & Leitrim ETB |
| Fees | Free |
| Enrolment | 253 (182 boys, 71 girls) 2025/26 |
| Language of instruction | English Medium School |
| DEIS | Yes — this school is in the DEIS programme |
| Roll number | 72100J |
| Eircode | F26WK25 |
| Address | Mullinmore Street, Crossmolina, Ballina, Co. Mayo |
Special classes
The NCSE lists no special class at this school for the coming year.
The area around this school
School planning area: Crossmolina. 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 F26 (Ballina) was €200,000 in 2025. That is up 60.7% since 2020. CSO figures for the whole district, not the streets beside the school.
Area profile: the Pobal HP Deprivation Index rates Crossmolina South at 2.17 (Marginally Above Average), where 0 is the national average. 36% of adults there hold a third-level qualification.
Contact
| Principal | Ms Brenda O'Malley |
|---|---|
| Phone | 09631236 |
| TiernansCollege@msletb.ie | |
| Local authority | Mayo County Council |
Other schools in Crossmolina
- Cormaic Nfa Primary school, Mayo
- Crossmolina N.S. Primary school, Mayo
- Jesus & Mary Secondary School Secondary school, Mayo
- Kilmurry Ns Primary school, Mayo
- Rathbane N S Primary school, Mayo
- S N Leath Ardan Primary school, Mayo
- Scoil Néifinn Primary school, Mayo
How we know
DoE Schools GIS 2026 (CC BY 4.0) — checked 2026-08-27.