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Filtered by Co. Dublin 17 or more class teachers Clear all

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
School Pupils Since 2015/16 Average class Class teacherschange on 2024/25 Junior infants
St Patricks NS Dublin 15 · Roll 20130B 867
+19.1%
27.1 32 101
St Oliver Plunkett Malahide, Co. Dublin · Roll 17914S 838
−9.6%
24.9 33 90
St Brigids MXD N S Dublin 15 · Roll 00697S 834
−12.2%
25.7 32 94
S N Naomh Mochta Dublin 15 · Roll 18778S 805
−8.8%
25.0 32 91
St Colmcille Senior N S Dublin 16 · Roll 19742C 744
+4.9%
25.7 29 0
Scoil Colmcille Naofa Dublin 16 · Roll 19474D 721
−11.5%
24.7 29 179
Scoil Choilm Community NS Dublin 15 · Roll 20241K Multi-denominationalDEIS 698
−2.6%
22.1 31 54
Rush NS Rush, Co. Dublin · Roll 19660A 698
−6.6%
24.1 29 98
Holy Family National School Rathcoole, Co. Dublin · Roll 13217W 671
+6.8%
28.0 24 72
S N Naomh Mhuire Saggart, Co. Dublin · Roll 17055T 666
+7.2%
26.8 24 74
John Paul II N S Malahide, Co. Dublin · Roll 19627C 663
−2.5%
25.5 26 0
The Harold School Glasthule, Co. Dublin · Roll 20141G 642
−5.6%
23.6 27 83
Scoil Naomh Mearnog Portmarnock, Co. Dublin · Roll 10296G 638
+28.4%
26.3 24 81
Sacred Heart N S Dublin 15 · Roll 19755L 632
−25.3%
21.9 −228 68
Caisleain Nua Liamhna Newcastle, Co. Dublin · Roll 16461C 626
+30.1%
25.6 24 77
Holy Family Senior N S Swords, Co. Dublin · Roll 19877C 624
+0.3%
25.2 −124 0
St Benedicts National School Dublin 15 · Roll 20231H 622
−6.3%
25.9 24 71
Scoil Thomais Dublin 15 · Roll 19769W 622
−10.2%
22.8 27 64
Scoil Aine Naofa Lucan, Co. Dublin · Roll 19676P 614
+18.5%
26.4 23 0
Holywell Educate Together National School Swords, Co. Dublin · Roll 20348F Multi-denominational 613
+22.8%
24.3 24 70
St Fiachras Sen N S Dublin 5 · Roll 19628E 609
−3.8%
25.4 −124 0
Scoil Naomh Lucais Dublin 15 · Roll 16675V 602
+11.3%
25.1 24 73
St Christopher's NS Dublin 4 · Roll 20545H Some subjects through IrishDEIS 598 – 24.7 24 73
ST Olaf's National School Dublin 16 · Roll 19319O 591
+30.5%
25.7 +123 74
St. Louis National School Dublin 6 · Roll 20571I 590 – 22.5 26 46
Showing 25 of 92 Show 25 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.