St. Tiernan's College
St. Tiernan's College is a secondary school in Mayo. 253 pupils, Multi-denominational ethos, DEIS Post-primary.
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 — Post-primary |
| Roll number | 72100J |
| Eircode | F26WK25 |
| Address | Mullinmore Street, Crossmolina, Ballina, Co. Mayo |
What DEIS means here
DEIS Post-primary. This is extra staffing, a Home School Community Liaison coordinator, School Completion Programme access, enhanced capitation, free State exam fees, and eligibility for the HEAR Scheme for reduced-points college entry.
Post-primary DEIS benefits: Free State examination fees for Junior Cycle and Leaving Certificate, Home School Community Liaison (HSCL) coordinator, School Completion Programme, and eligibility for the HEAR Scheme (Higher Education Access Route) offering reserved university places at reduced CAO points across Irish universities.
Worth knowing: several things people associate with DEIS are now available in every school. Schoolbooks are free at primary and post-primary regardless of DEIS status, and since 2025 all primary schools are eligible for the hot school meals programme. What remains specific to DEIS is the staffing — reduced class sizes in Urban Band 1, the Home School Community Liaison coordinator, School Completion Programme access and enhanced capitation.
Band as published in the Department's DEIS list, last revised 2022-10-12.
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.