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College Rd, Castleknock, Dublin 15 · D15 PD95 · Roll number 60100Q
Castleknock College is one of 24 post-primary schools in or within 3 km of Carpenterstown. Every school in and around Carpenterstown →
What stands out about Castleknock College
- 771 pupils, near the middle for post-primary schools in Ireland (the median is 585).
- About as many pupils as in 2019/20 (+10%).
- Teaches through English, with Irish as a subject.
- A boys’ school.
- Charges fees.
- A voluntary secondary school: owned by its trustees, most often a religious order or its successor trust, and paid for by the State.
- Its patron is Congregation of the Missions (Vincentians); its ethos is Catholic.
Pupils over time
2015/16 to 2025/26Castleknock College had 771 pupils in 2025/26, against 621 in 2015/16 (+24%). Its largest roll was 775, in 2024/25. Its roll rose in 8 of the 10 years.
Department of Education enrolments at 30 September each year; girls and boys where the lists give them.
No letter for Castleknock College
Ireland publishes no exam results school by school, and section 53 of the Education Act 1998 restricts comparing schools by them, so this school has no letter and nothing here ranks it. Its facts are the Department of Education’s; its inspection reports are linked below.
What the Department of Education does publish for Castleknock College is on this page: its pupils each September since 2015/16, girls and boys, its patron and ethos, whether it teaches through Irish, whether it is in DEIS, and its inspection reports.
Newspapers print lists of how many of a school’s leavers go on to college. Those count destinations, not exam results, and depend on who a school takes in; we don’t use them.
Inspection reports on Castleknock College
The Department of Education’s Inspectorate visits schools and publishes its reports. The reports describe what inspectors saw; they give no overall grade, and we don’t make one. Reports for this school on gov.ie ↗
Inspectors visit every kind of school. Whole-school evaluations look at teaching and learning, leadership and management; subject inspections look at one subject; follow-through inspections check whether earlier advice was taken. Each report is published on gov.ie with the school’s response.
Getting a place at Castleknock College
Every school admits under its own published admission policy; no admissions numbers are published.
Families apply to Castleknock College directly, usually in the year before their child finishes sixth class; the school’s yearly admission notice gives the dates for applying and for its decisions.
A school with more applicants than places admits on the criteria in its admission policy, often brothers and sisters, the area it serves and, for post-primary schools, its feeder primaries. A family refused a place can appeal.
It charges fees, set by the school. It takes boys only.
No figures on applications are published, but the roll shows demand: Castleknock College has grown by 10% since 2019/20. All the schools around Carpenterstown together changed by −1%.
Pupils since 2019/20
Education (Admission to Schools) Act 2018; Department of Education enrolments 2019/20 and 2025/26 (preliminary).
Side by side with the nearest post-primary schools
2025/26The nearest schools of the same kind, as the crow flies: their pupils, ethos and language. No results: none are published.
Of the 6 nearest post-primary schools, 3 have more pupils than Castleknock College. Since 2019/20 its roll has changed by +10%; 3 of the 6 grew faster.
| School | Pupils | Since 2019/20 | Ethos | Language | DEIS | Away |
|---|---|---|---|---|---|---|
| Castleknock College | 771 | +10% | Catholic | English | ||
| Mount Sackville Secondary School | 636 | −3% | Catholic | English | 1.2 km | |
| Edmund Rice College | 912 | +576% | Catholic | English | 1.5 km | |
| Castleknock Community College | 1,318 | +13% | Multi-denominational | English | 1.5 km | |
| The Kings Hospital | 732 | +3% | Church of Ireland | English | 1.6 km | |
| Phobailscoil Iosolde | 764 | −0% | Inter-denominational | English | ✓ | 2.3 km |
| Le Cheile Secondary School | 944 | +26% | Catholic | English | 2.4 km |
The other 177 post-primary schools in Co. Dublin
| School | Pupils | Since 2019/20 | Ethos | Language | DEIS | Away |
|---|---|---|---|---|---|---|
| St. Seton's Secondary School | 741 | – | Other | English | ✓ | 2.8 km |
| Luttrellstown Community College | 1,027 | +15% | Multi-denominational | English | 2.8 km | |
| Kylemore College | 479 | +22% | Multi-denominational | English | ✓ | 2.8 km |
| Scoil Phobail Chuil Mhin | 1,014 | −1% | Inter-denominational | English | 2.9 km | |
| St. Kevin's Community College | 525 | +41% | Inter-denominational | English | ✓ | 3 km |
| Collinstown Park Community College | 630 | +11% | Inter-denominational | English | ✓ | 3.5 km |
| Rath Dara Community College | 323 | +28% | Inter-denominational | English | ✓ | 3.8 km |
| Blakestown Community School | 563 | +31% | Inter-denominational | English | ✓ | 3.8 km |
| New Cross College | 417 | +110% | Catholic | English | ✓ | 4 km |
| St Dominics College | 790 | −1% | Catholic | English | 4.1 km | |
| St Declan's College | 651 | +0% | Catholic | English | 4.4 km | |
| Coláiste Mhuire | 272 | −4% | Catholic | All in Irish | ✓ | 4.4 km |
| Hartstown Community School | 1,120 | −1% | Inter-denominational | English | 4.4 km | |
| Coláiste Phádraig CBS | 745 | +38% | Catholic | English | 4.4 km | |
| Coláiste Eoin | 257 | +43% | Multi-denominational | English | ✓ | 4.5 km |
| Mercy Secondary School | 349 | +124% | Catholic | English | ✓ | 4.7 km |
| St Joseph's College | 934 | +6% | Catholic | English | 4.9 km | |
| St Michaels Secondary School | 646 | +4% | Catholic | English | ✓ | 4.9 km |
| Coláiste Cois Life | 592 | −27% | Multi-denominational | All in Irish | 4.9 km | |
| Cabra Community College | 264 | +102% | Multi-denominational | English | ✓ | 4.9 km |
| Kishoge Community College | 937 | +12% | Multi-denominational | English | 5.2 km | |
| Griffeen Community College | 576 | +317% | Multi-denominational | English | 5.2 km | |
| Our Lady Of Mercy Secondary School | 289 | −6% | Catholic | English | ✓ | 5.3 km |
| Meanscoil Iognáid Rís | 521 | −10% | Catholic | English | ✓ | 5.4 km |
| Coláiste Chilliain | 400 | −4% | Multi-denominational | All in Irish | 5.4 km | |
| Coláiste Pobail Setanta | 1,079 | +2% | Multi-denominational | English | 5.5 km | |
| Eriu Community College | 193 | – | Multi-denominational | English | 5.6 km | |
| Hansfield ETSS | 867 | +34% | Multi-denominational | English | 5.7 km | |
| Moyle Park College | 763 | +3% | Catholic | English | 5.7 km | |
| Assumption Secondary School | 270 | +8% | Catholic | English | ✓ | 5.7 km |
| Coláiste Bríde | 993 | +4% | Catholic | English | 5.8 km | |
| Lucan Community College | 966 | +5% | Multi-denominational | English | 5.9 km | |
| Beneavin De La Salle College | 585 | +15% | Catholic | English | ✓ | 5.9 km |
| Deansrath Community College | 425 | +43% | Inter-denominational | English | ✓ | 6 km |
| St Josephs Secondary School | 283 | +48% | Catholic | English | ✓ | 6 km |
| C.B.S. James Street | 251 | +65% | Catholic | English | ✓ | 6.1 km |
| St Vincents C.B.S. Glasnevin | 408 | +13% | Catholic | English | ✓ | 6.2 km |
| St Kevins College | 503 | −6% | Catholic | English | ✓ | 6.3 km |
| Loreto College | 320 | −20% | Catholic | English | ✓ | 6.4 km |
| St Mary's Secondary School | 830 | +2% | Catholic | English | ✓ | 6.4 km |
| St Pauls C.B.S. | 244 | +15% | Catholic | English | ✓ | 6.5 km |
| Clogher Road Community College | 297 | +46% | Multi-denominational | English | ✓ | 6.7 km |
| Rosary College | 250 | +35% | Catholic | English | ✓ | 6.9 km |
| Kingswood Community College | 1,006 | +93% | Multi-denominational | English | 6.9 km | |
| Mount Carmel Secondary School | 386 | −4% | Catholic | English | ✓ | 6.9 km |
| Presentation College | 262 | +55% | Catholic | English | ✓ | 7 km |
| Scoil Chaitriona | 523 | +11% | Catholic | All in Irish | ✓ | 7.1 km |
| Adamstown Community College | 981 | +8% | Multi-denominational | English | 7.2 km | |
| St Pauls Secondary School | 466 | +4% | Catholic | English | ✓ | 7.2 km |
| Greenhills College | 186 | +36% | Multi-denominational | English | ✓ | 7.2 km |
| Belvedere College S.J | 1,011 | +1% | Catholic | English | 7.2 km | |
| St Patricks Cathedral Grammar School | 302 | +39% | Church of Ireland | English | 7.2 km | |
| Trinity Comprehensive School | 564 | +15% | Catholic | English | ✓ | 7.5 km |
| Larkin Community College | 403 | +3% | Inter-denominational | English | ✓ | 7.6 km |
| Coláiste de hÍde | 266 | −11% | Multi-denominational | All in Irish | ✓ | 7.6 km |
| Christian Brothers, Synge St. | 256 | −3% | Catholic | English | ✓ | 7.7 km |
| Harolds Cross Educate Together Secondary School | 437 | – | Multi-denominational | English | 7.8 km | |
| O'Connell School | 222 | +8% | Catholic | English | ✓ | 7.9 km |
| St. Aidan's C.B.S. | 725 | +1% | Catholic | English | 7.9 km | |
| Dominican College | 799 | +7% | Catholic | English | 7.9 km | |
| Rosmini Community School | 139 | +16% | Inter-denominational | English | ✓ | 8 km |
| Templeogue College | 637 | −6% | Catholic | English | 8.1 km | |
| Clonturk College | 968 | +182% | Multi-denominational | English | 8.1 km | |
| St. Mary's College C.S.Sp., Rathmines | 500 | +17% | Catholic | English | 8.2 km | |
| Loreto College | 588 | +5% | Catholic | English | 8.2 km | |
| Catholic University School | 544 | +7% | Catholic | English | 8.3 km | |
| St Louis High School | 690 | +2% | Catholic | English | 8.4 km | |
| St Mac Dara's Community College | 915 | +7% | Inter-denominational | English | 8.4 km | |
| Presentation Community College | 443 | +26% | Catholic | English | 8.4 km | |
| C.B.S. Westland Row | 205 | +52% | Catholic | English | ✓ | 8.4 km |
| Tallaght Community School | 840 | +10% | Inter-denominational | English | ✓ | 8.4 km |
| Terenure College | 800 | +16% | Catholic | English | 8.6 km | |
| St Marks Community School | 931 | +12% | Inter-denominational | English | ✓ | 8.7 km |
| Ellenfield Community College | 150 | +3% | Multi-denominational | English | ✓ | 8.7 km |
| Maryfield College | 527 | −11% | Catholic | English | 8.9 km | |
| St Josephs C.B.S. | 310 | +20% | Catholic | English | ✓ | 9 km |
| Our Ladys School | 799 | +5% | Catholic | English | 9 km | |
| Stratford College | 189 | +28% | Jewish | English | 9 km | |
| Marino College | 297 | +21% | Multi-denominational | English | ✓ | 9.1 km |
| Árdscoil Rís | 563 | +4% | Catholic | English | 9.3 km | |
| Our Lady Of Mercy College | 407 | +6% | Catholic | English | ✓ | 9.4 km |
| Sandford Park School Ltd | 437 | +8% | Inter-denominational | English | 9.4 km | |
| The High School | 811 | +11% | Church of Ireland | English | 9.4 km | |
| Old Bawn Community School | 1,024 | +12% | Inter-denominational | English | 9.4 km | |
| St Aidan's Community School | 561 | +28% | Inter-denominational | English | ✓ | 9.6 km |
| St Conleths College | 339 | +19% | Catholic | English | 9.6 km | |
| Mount Temple Comprehensive School | 903 | +2% | Church of Ireland | English | 9.7 km | |
| Gonzaga College | 576 | +4% | Catholic | English | 9.8 km | |
| Muckross Park College | 709 | +0% | Catholic | English | 9.9 km | |
| Ringsend College | 191 | +1% | Multi-denominational | English | ✓ | 10 km |
| St. David's College | 550 | +8% | Catholic | English | ✓ | 10 km |
| Loreto High School | 625 | −5% | Catholic | English | 10 km | |
| Alexandra College | 664 | +13% | Church of Ireland | English | 10 km | |
| Marian College | 319 | −8% | Catholic | English | ✓ | 10 km |
| Coláiste Éanna | 618 | +3% | Catholic | English | 10 km | |
| Sancta Maria College | 577 | +5% | Catholic | English | 10 km | |
| Gaelcholáiste an Phiarsaigh | 296 | +13% | Multi-denominational | All in Irish | 10 km | |
| Firhouse Community College | 825 | +2% | Inter-denominational | English | 10 km | |
| Mount Seskin Community College | 350 | +8% | Inter-denominational | English | ✓ | 10 km |
| Killinarden Community School | 471 | −3% | Inter-denominational | English | ✓ | 10 km |
| Coláiste pobail Fóla | 758 | – | Multi-denominational | English | 10 km | |
| De La Salle College | 463 | +45% | Catholic | English | 11 km | |
| St. Colmcille's Community School | 727 | −0% | Inter-denominational | English | 11 km | |
| Coolock Community College | 205 | +32% | Multi-denominational | English | ✓ | 11 km |
| The Teresian School | 230 | +16% | Catholic | English | 11 km | |
| Sandymount Park Educate Together Secondary School | 437 | +460% | Multi-denominational | English | 11 km | |
| St Marys Secondary School | 320 | +0% | Catholic | English | ✓ | 11 km |
| Chanel College | 451 | −21% | Catholic | English | ✓ | 11 km |
| Holy Faith Secondary School | 647 | +0% | Catholic | English | 11 km | |
| St Michaels College | 731 | +10% | Catholic | English | 11 km | |
| Firhouse Educate Together Secondary School | 411 | +407% | Multi-denominational | English | 11 km | |
| Mercy College Coolock | 402 | −6% | Catholic | English | ✓ | 11 km |
| Our Lady's Grove Secondary School | 295 | −3% | Catholic | English | 12 km | |
| St Pauls College | 650 | +10% | Catholic | English | 12 km | |
| St Kilian's Deutsche Schule | 475 | +18% | Inter-denominational | English | 12 km | |
| Ballinteer Community School | 415 | +2% | Inter-denominational | English | ✓ | 12 km |
| Goatstown Educate Together Secondary School | 366 | – | Multi-denominational | English | 12 km | |
| Loreto College | 655 | +4% | Catholic | English | 13 km | |
| Holy Family Community School | 998 | +4% | Inter-denominational | English | 13 km | |
| Rockbrook Park School | 186 | +14% | Catholic | English | 13 km | |
| Mount Anville Secondary School | 726 | +4% | Catholic | English | 13 km | |
| St. Tiernan's Community School | 368 | +7% | Inter-denominational | English | ✓ | 13 km |
| Manor House School | 652 | −5% | Catholic | English | 13 km | |
| Coláiste Eoin | 517 | +4% | Catholic | All in Irish | 13 km | |
| Wesley College | 942 | +2% | Methodist | English | 13 km | |
| St Andrews College | 1,011 | +2% | Presbyterian | English | 13 km | |
| St Columba's College | 357 | +7% | Church of Ireland | English | 13 km | |
| Coláiste Íosagáin | 488 | +1% | Catholic | All in Irish | 13 km | |
| The Donahies Community School | 488 | +4% | Inter-denominational | English | ✓ | 13 km |
| Coláiste Choilm | 421 | −23% | Catholic | English | 13 km | |
| Árdscoil La Salle | 289 | +74% | Catholic | English | ✓ | 13 km |
| Willow Park School | 206 | −0% | Catholic | English | 13 km | |
| Swords Community College | 952 | +473% | Multi-denominational | English | 13 km | |
| St Benildus College | 949 | +18% | Catholic | English | 14 km | |
| Belmayne Educate Together Secondary School | 595 | +1,883% | Multi-denominational | English | 14 km | |
| Blackrock College | 1,041 | +2% | Catholic | English | 14 km | |
| Oatlands College | 623 | +14% | Catholic | English | 14 km | |
| Dominican College | 521 | +19% | Catholic | English | 14 km | |
| Fingal Community College | 864 | +1% | Inter-denominational | English | 14 km | |
| St Finians Community College | 671 | +4% | Multi-denominational | English | ✓ | 14 km |
| St Raphaela's Secondary School | 637 | +12% | Catholic | English | 14 km | |
| Malahide & Portmarnock Secondary School | 696 | +939% | Multi-denominational | English | 14 km | |
| Grange Community College | 553 | +98% | Inter-denominational | English | ✓ | 14 km |
| Gaelcholáiste Reachrann | 453 | +2% | Inter-denominational | All in Irish | 14 km | |
| Rosemont School | 307 | +69% | Catholic | English | 15 km | |
| Newpark Comprehensive School | 884 | +3% | Church of Ireland | English | 16 km | |
| Pobalscoil Neasáin | 831 | +7% | Inter-denominational | English | 16 km | |
| St Marys Secondary School | 230 | −16% | Catholic | English | 16 km | |
| Malahide Community School | 1,250 | +3% | Inter-denominational | English | 16 km | |
| Rockford Manor Secondary School | 273 | −1% | Catholic | English | 16 km | |
| Loreto College Foxrock | 660 | +27% | Catholic | English | 17 km | |
| Stepaside Educate Together Secondary School | 741 | +246% | Multi-denominational | English | 17 km | |
| St. Fintan's High School | 714 | +1% | Catholic | English | 17 km | |
| Portmarnock Community School | 955 | +3% | Inter-denominational | English | 17 km | |
| Christian Brothers College | 549 | +7% | Catholic | English | 17 km | |
| Clonkeen College | 635 | +10% | Catholic | English | 18 km | |
| Santa Sabina Dominican College | 754 | +13% | Catholic | English | 18 km | |
| Sutton Park School | 503 | +36% | Church of Ireland | English | 18 km | |
| Holy Child Community School | 275 | +12% | Inter-denominational | English | ✓ | 19 km |
| Rathdown School | 364 | +38% | Church of Ireland | English | 19 km | |
| Cabinteely Community School | 512 | +12% | Inter-denominational | English | ✓ | 19 km |
| St Joseph Of Cluny Secondary School | 270 | +7% | Catholic | English | 20 km | |
| Blackrock Educate Together Secondary School | 236 | – | Multi-denominational | English | 20 km | |
| Donabate Community College | 799 | +5% | Multi-denominational | English | 20 km | |
| St Laurence College | 302 | +17% | Catholic | English | ✓ | 20 km |
| Loreto Abbey Secondary School | 757 | +16% | Catholic | English | 20 km | |
| Holy Child Killiney | 382 | +9% | Catholic | English | 21 km | |
| John Scottus Secondary School | 211 | +77% | Inter-denominational | English | 23 km | |
| Lusk Community College | 1,104 | +61% | Multi-denominational | English | 23 km | |
| Woodbrook College | 623 | +51% | Catholic | English | ✓ | 24 km |
| St Joseph's Secondary School | 945 | +19% | Catholic | English | ✓ | 25 km |
| Bremore Educate Together Secondary School | 824 | +124% | Multi-denominational | English | 28 km | |
| Coláiste Ghlór na Mara | 520 | +63% | Multi-denominational | All in Irish | 29 km | |
| Ardgillan Community College | 1,014 | +6% | Multi-denominational | English | 29 km | |
| Skerries Community College | 1,025 | +5% | Inter-denominational | English | 29 km | |
| Balbriggan Community College | 686 | +33% | Inter-denominational | English | ✓ | 30 km |
| Loreto Secondary School | 1,220 | −5% | Catholic | English | 30 km |
Living in Carpenterstown
The town’s figures, not this street’s.
Homes in the D15 Eircode area
Housing in Carpenterstown →The median sale price rose from €370,000 in 2023 to €441,500 in 2025 (+19%).
New against second-hand, 2023 to 2025
Property Price Register sales in the D15 Eircode routing area, 2023 to 2025.
Renting in Carpenterstown
Cost of living in Carpenterstown →New tenancies in Carpenterstown averaged €1,820 a month in 2025, against €1,699 in 2024 (+7%).
Residential Tenancies Board rent index, new tenancies, 2024 and 2025.
Location
Directions ↗














Carpenterstown, D15 PD95
Post-primary schools near Castleknock College
Nearest first, as the crow flies, up to 25 km. Each school’s own admission policy decides who gets a place.
Questions about Castleknock College
Is Castleknock College a good school?
We don’t grade it: Ireland publishes no exam results school by school, and section 53 of the Education Act 1998 restricts comparing them. Its inspection reports on gov.ie, a visit and a talk with the principal will tell you more than any table could.
How many pupils does Castleknock College have?
771 pupils in 2025/26. That is +10% since 2019/20.
Does Castleknock College teach through Irish?
No: Castleknock College teaches in English, with Irish as a subject.
Who runs Castleknock College?
Castleknock College has a Catholic ethos. Its patron is Congregation of the Missions (Vincentians).
How do pupils get a place at Castleknock College?
Apply to the school directly. It publishes an admission policy and a yearly admission notice with its dates; if more children apply than it has places, it admits on the criteria in its policy.
Which schools of the same kind are near Castleknock College?
The nearest are Mount Sackville Secondary School (1.2 km), Edmund Rice College (1.5 km) and Castleknock Community College (1.5 km).
Sources: Department of Education, school lists 2025/26 (preliminary) and enrolments since 2015/16, CC BY 4.0 · inspection reports on gov.ie, linked by roll number. Under Creative Commons Attribution 4.0 (CC BY 4.0).
Facts from the Department of Education’s school lists. Listed with Carpenterstown; nothing here rates the school.
Contains Central Statistics Office (CSO) data, Census 2022, and Tailte Éireann boundaries (CSO Urban Areas, Small Areas, local electoral areas, constituencies), under Creative Commons Attribution 4.0 (CC BY 4.0).