Sion Hill
Sion Hill is a secondary school girls only in Blackrock. 521 pupils, Catholic ethos, 2 special classes, oversubscribed last year.
The facts
| Type | Secondary school |
|---|---|
| Gender | Girls only |
| Ethos | Catholic |
| Patron | Le Chéile Schools Trust |
| Fees | Free |
| Enrolment | 521 (0 boys, 521 girls) 2025/26 |
| Language of instruction | English Medium School |
| Roll number | 60070K |
| Eircode | A94TP97 |
| Address | Dominican College Sion Hill, Cross Avenue, Blackrock, Co Dublin |
Getting in
Oversubscribed last year. The notice carries a previous-year breakdown, which schools only have to publish when more people applied than there were places.
| Places in the coming year | 90 |
|---|---|
| Places last year | 90 |
| Applications last year | 336 |
| Applications open | 01 October 2025 |
| Applications close | 22 October 2025 |
| Decisions issued by | 12 November 2025 |
| Offers must be accepted by | 26 November 2025 |
check the notice — it lists more than one intake.
Read the school's Annual Admission Notice ↗ (2026/27)
Ireland has no catchment areas. A place depends on the school's own oversubscription criteria — siblings, feeder school, parish, distance, date of application — not on where you live. Read the admissions policy for those.
Special classes
2 special classes sanctioned for 26/27:
- 2 × Autism/Autistic Spectrum Disorders
1 of these are newly sanctioned for 26/27, up from 1 classes last year.
Source: National Council for Special Education. Children in a special class travel under a separate transport scheme with its own rules.
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-williamstown at 10.65 (Affluent), where 0 is the national average. 78% of adults there hold a third-level qualification.
Contact
| Principal | Ciara Reid (Acting) |
|---|---|
| Phone | 015722113 |
| admin@sionhillcollege.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
- Coláiste Íosagáin 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
- St Andrew's College Secondary school, Booterstown
How we know
DoE Schools GIS 2026 (CC BY 4.0) — checked 2026-08-27.