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

39 schools in Co. Dublin · 2025/26

pupils
20,871
junior infants
2,048
in 2 all-Irish schools
887 4.2%
class teachers · 3 gained one · 6 lost one since 2024/25
852 +62 since 2015/16
together since 2015/16

The 39 schools with figures for both years had 21,622 pupils in 2015/16 and have 20,871 now. Schools that have closed, and newer schools, aren’t counted.

−3.5%
Over 10 years

0 grew · 39 steady · 0 fell

Show the 39 schools

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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 Oliver Plunkett Malahide
    838 −9.6%
  2. S N Naomh Mochta Dublin 15
    805 −8.8%
  3. St Colmcille Senior N S Dublin 16
    744 +4.9%
  4. Scoil Choilm Community NS Dublin 15Multi-denominationalDEIS
    698 −2.6%
  5. Rush NS Rush
    698 −6.6%
  6. Holy Family National School Rathcoole
    671 +6.8%
  7. S N Naomh Mhuire Saggart
    666 +7.2%
  8. John Paul II N S Malahide
    663 −2.5%
  9. The Harold School Glasthule
    642 −5.6%
  10. Holy Family Senior N S Swords
    624 +0.3%
  11. St Benedicts National School Dublin 15
    622 −6.3%
  12. St Fiachras Sen N S Dublin 5
    609 −3.8%
  13. Carysfort NS Blackrock
    583 +7.0%
  14. St Thomas Junior National School Lucan
    573 +3.1%
  15. St Pius X G N S Dublin 6WGirls
    540 +3.1%
  16. Brackenstown Senior N S Swords
    530 −6.2%
  17. St Pius X N S Boys Dublin 6Boys
    511 −3.4%
  18. Lucan B N S LucanBoys
    501 −0.8%
  19. St Brigids Girls N S Dublin 18Girls
    499 −8.4%
  20. St Marks Sen NS Dublin 24DEIS
    497 −3.5%
  21. Scoil Lorcáin Baile na ManachGaelscoil
    485 −0.6%
  22. Mother of Divine Grace Dublin 11DEIS
    480 −2.8%
  23. St Canices G N S Dublin 11GirlsDEIS
    473 +4.2%
  24. St Patrick GNS Dublin 16
    472 −8.5%
  25. Griffeen Valley Educate Together NS LucanMulti-denominational
    466 −4.3%
Showing 25 of 39 Show 14 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.