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92 schools in Co. Dublin · 2025/26

pupils
47,573
junior infants
5,484
in 4 all-Irish schools
1,773 3.7%
class teachers · 9 gained one · 13 lost one since 2024/25
2,000 +180 since 2015/16
together since 2015/16

The 85 schools with figures for both years had 45,588 pupils in 2015/16 and have 43,858 now. Schools that have closed, and newer schools, aren’t counted.

−3.8%
Over 10 years

18 grew · 39 steady · 28 fell · 7 newer

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Number of pupils
Change in pupils over 10 years
Average class size
Class teachers
Class teachers since 2024/25
DEIS and islands
  1. St Patricks NS Dublin 15
    867 +19.1%
  2. St Oliver Plunkett Malahide
    838 −9.6%
  3. St Brigids MXD N S Dublin 15
    834 −12.2%
  4. S N Naomh Mochta Dublin 15
    805 −8.8%
  5. St Colmcille Senior N S Dublin 16
    744 +4.9%
  6. Scoil Colmcille Naofa Dublin 16
    721 −11.5%
  7. Scoil Choilm Community NS Dublin 15Multi-denominationalDEIS
    698 −2.6%
  8. Rush NS Rush
    698 −6.6%
  9. Holy Family National School Rathcoole
    671 +6.8%
  10. S N Naomh Mhuire Saggart
    666 +7.2%
  11. John Paul II N S Malahide
    663 −2.5%
  12. The Harold School Glasthule
    642 −5.6%
  13. Scoil Naomh Mearnog Portmarnock
    638 +28.4%
  14. Sacred Heart N S Dublin 15
    632 −25.3%
  15. Caisleain Nua Liamhna Newcastle
    626 +30.1%
  16. Holy Family Senior N S Swords
    624 +0.3%
  17. St Benedicts National School Dublin 15
    622 −6.3%
  18. Scoil Thomais Dublin 15
    622 −10.2%
  19. Scoil Aine Naofa Lucan
    614 +18.5%
  20. Holywell Educate Together National School SwordsMulti-denominational
    613 +22.8%
  21. St Fiachras Sen N S Dublin 5
    609 −3.8%
  22. Scoil Naomh Lucais Dublin 15
    602 +11.3%
  23. St Christopher's NS Dublin 4Some subjects through IrishDEIS
    598 From 2019/20
  24. ST Olaf's National School Dublin 16
    591 +30.5%
  25. St. Louis National School Dublin 6
    590 From 2023/24
  26. St Marys Central N S Dublin 4
    587 +95.0%
  27. Holy Trinity National School Dublin 18
    586 +37.6%
  28. Scoil Ghrainne Community National School Dublin 15Multi-denominational
    585 −13.2%
  29. Carysfort NS Blackrock
    583 +7.0%
  30. Hansfield Educate Together National School Dublin 15Multi-denominational
    575 +114.6%
  31. St Thomas Junior National School Lucan
    573 +3.1%
  32. Holy Family Junior N S Swords
    565 −18.6%
  33. Scoil Mhuire LucanGirls
    558 −18.4%
  34. Scoil Fhiachra Soisir Dublin 5
    557 −24.7%
  35. Stepaside Educate Together National School Dublin 18Multi-denominational
    542 +351.7%
  36. St Pius X G N S Dublin 6WGirls
    540 +3.1%
  37. St Ciarans N S Dublin 15
    530 −27.5%
  38. Brackenstown Senior N S Swords
    530 −6.2%
  39. Holy Rosary Primary School Dublin 24DEIS
    525 −12.4%
  40. Dublin 7 Educate Together NS Dublin 7Multi-denominational
    515 +16.3%
  41. Tyrrelstown Educate Together National School Dublin 15Multi-denominational
    511 −13.4%
  42. St Pius X N S Boys Dublin 6Boys
    511 −3.4%
  43. Lucan B N S LucanBoys
    501 −0.8%
  44. St Brigids Girls N S Dublin 18Girls
    499 −8.4%
  45. Scoil Padraig Naofa B BlackrockBoys
    499 −22.9%
  46. St Cronans Junior National School Swords
    498 −21.6%
  47. St Marks Sen NS Dublin 24DEIS
    497 −3.5%
  48. Holy Child National School Dublin 9
    495 +23.1%
  49. Scoil Lorcáin Baile na ManachGaelscoil
    485 −0.6%
  50. St Marys N S Lucan
    483 +14.2%
  51. Mother of Divine Grace Dublin 11DEIS
    480 −2.8%
  52. St Patricks GNS Dublin 18Girls
    478 −15.2%
  53. St Canices G N S Dublin 11GirlsDEIS
    473 +4.2%
  54. St Patrick GNS Dublin 16
    472 −8.5%
  55. Our Lady Queen of Apostles Dublin 22DEIS
    469 −15.9%
  56. Griffeen Valley Educate Together NS LucanMulti-denominational
    466 −4.3%
  57. Sacred Heart N S Dublin 22
    463 −1.7%
  58. Marley Grange NS Dublin 16
    461 −7.6%
  59. Bishop Galvin NS Dublin 6w
    461 −2.9%
  60. St Patricks N School Dublin 9
    449 −8.4%
  61. St Marks Junior Mixed Dublin 24DEIS
    449 −22.0%
  62. Ladyswell N S Dublin 15DEIS
    447 −16.6%
  63. Gaelscoil Chluain Dolcain Baile Átha Cliath 22Gaelscoil
    445 +26.8%
  64. Clochar Loreto N S Dublin 14
    445 −13.6%
  65. Gaelscoil na Fuinseoige Bác 14GaelscoilMulti-denominational
    441 Opened 2016/17
  66. St Annes MXD N S Shankill
    440 −13.9%
  67. Bishop Shanahan NS Dublin 6W
    437 −8.0%
  68. S N Cnoc Ainbhil StillorganGirls
    434 −6.9%
  69. Assumption Junior School Dublin 12DEIS
    434 −17.8%
  70. St Fintans NS Dublin 13
    431 −8.3%
  71. Oatlands Primary School, An Edmund Rice School Blackrock
    428 −0.7%
  72. St Molaga Senior NS Balbriggan
    422 −5.6%
  73. Islamic National School Dublin 14Muslim
    414 +39.9%
  74. St Laurence's National School Dublin 13
    413 −5.1%
  75. S N Lusca Lusk
    413 −51.2%
Showing 75 of 92 Show 17 more

Distances are straight lines, not travel routes. Pupil numbers and class sizes: Department of Education, 2025/26. Change is over 10 years, since 2015/16. Average class size counts mainstream classes only, and there's one class teacher for each mainstream class. Totals cover every school in the results, not just those shown.