Coláiste Íosagáin
Coláiste Íosagáin is a secondary school girls only irish-medium in Booterstown. 488 pupils, Catholic ethos.
The facts
| Type | Secondary school |
|---|---|
| Gender | Girls only |
| Ethos | Catholic |
| Patron | CEIST |
| Fees | Free |
| Enrolment | 488 (0 boys, 488 girls) 2025/26 |
| Language of instruction | Irish Medium School |
| Roll number | 60042F |
| Eircode | A94KV12 |
| Address | Bóthar Stigh Lorgan, Baile an Bhóthair, An Charraig Dhubh, Co Átha Cliath |
Special classes
The NCSE lists no special class at this school for the coming year.
The area around this school
School planning area: Booterstown / Blackrock. 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 A94 (Blackrock) was €830,000 in 2025. That is up 35.0% since 2020. CSO figures for the whole district, not the streets beside the school.
Area profile: the Pobal HP Deprivation Index rates Blackrock-booterstown at 15.12 (Affluent), where 0 is the national average. 81% of adults there hold a third-level qualification.
Contact
| Principal | Treasa Ní Fhearraigh |
|---|---|
| Phone | 012884028 |
| eolas@eoiniosagain.ie | |
| Local authority | Dun Laoghaire Rathdown |
Other schools in Booterstown / Blackrock
- Benincasa Special School Special school, Dundrum
- Blackrock College Secondary school, Blackrock
- Booterstown Boys Primary school, Booterstown
- Booterstown N S Primary school, Blackrock
- Carysfort NS Primary school, Blackrock
- Coláiste Eoin Secondary school, Booterstown
- Islamic National School Primary school, Clonskeagh
- Lycée Français International (Secondary) Secondary school, Clonskeagh
- Mount Merrion NS Primary school, Mount Merrion
- Our Lady Of Mercy Convent School Primary school, Booterstown
- Sion Hill Secondary school, Blackrock
- St Andrew's College Secondary school, Booterstown
How we know
DoE Schools GIS 2026 (CC BY 4.0) — checked 2026-08-27.