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Filtered by Co. Dublin Lost a class teacher Clear all

82 schools in Co. Dublin · 2025/26

pupils
22,487
junior infants
2,470
in 5 all-Irish schools
1,025 4.6%
class teachers · 0 gained one · 82 lost one since 2024/25
1,017 −109 since 2015/16
together since 2015/16

The 79 schools with figures for both years had 27,219 pupils in 2015/16 and have 21,668 now. Schools that have closed, and newer schools, aren’t counted.

−20.4%
Over 10 years

3 grew · 15 steady · 61 fell · 3 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. Sacred Heart N S Dublin 15
    632 −25.3%
  2. Holy Family Senior N S Swords
    624 +0.3%
  3. St Fiachras Sen N S Dublin 5
    609 −3.8%
  4. St Ciarans N S Dublin 15
    530 −27.5%
  5. Scoil Padraig Naofa B BlackrockBoys
    499 −22.9%
  6. St Cronans Junior National School Swords
    498 −21.6%
  7. St Patricks GNS Dublin 18Girls
    478 −15.2%
  8. St Patrick GNS Dublin 16
    472 −8.5%
  9. S N Cnoc Ainbhil StillorganGirls
    434 −6.9%
  10. St Laurence's National School Dublin 13
    413 −5.1%
  11. St Brigids Convent Dublin 11Girls
    406 −12.5%
  12. St Ronans N S Dublin 22DEIS
    396 −8.8%
  13. S N Naomh Lorcan StillorganBoys
    390 −12.2%
  14. St Helens Senior N S Portmarnock
    381 +42.7%
  15. S N Eoin Baisde Girls Senior Dublin 3Girls
    380 −8.4%
  16. St Raphaelas N S BlackrockGirls
    375 −20.4%
  17. Scoil Mhuire Boys Dublin 14Boys
    367 −19.9%
  18. Presentation Primary School Dublin 6WGirls
    367 −37.7%
  19. S N Peadar agus Pol N Balbriggan
    357 −24.5%
  20. Scoil Úna Naofa Dublin 12DEIS
    356 From 2016/17
  21. St Canices B N S Dublin 11BoysDEIS
    355 −17.8%
  22. Mary, Help of Christians G.N.S. Dublin 7Girls
    352 −17.8%
  23. Scoil Mhuire MXD Howth
    349 −3.9%
  24. St Georges N S BalbrigganChurch of Ireland
    339 −16.3%
  25. St Attractas Junior N S Dublin 16
    337 −2.6%
School Pupils Since 2015/16 Average class Class teacherschange on 2024/25 Junior infants
Sacred Heart N S Dublin 15 · Roll 19755L 632
−25.3%
21.9 −228 68
Holy Family Senior N S Swords, Co. Dublin · Roll 19877C 624
+0.3%
25.2 −124 0
St Fiachras Sen N S Dublin 5 · Roll 19628E 609
−3.8%
25.4 −124 0
St Ciarans N S Dublin 15 · Roll 19644C 530
−27.5%
22.5 −123 54
Scoil Padraig Naofa B Blackrock, Co. Dublin · Roll 19258U Boys 499
−22.9%
23.5 −121 53
St Cronans Junior National School Swords, Co. Dublin · Roll 19456B 498
−21.6%
24.3 −120 123
St Patricks GNS Dublin 18 · Roll 19259W Girls 478
−15.2%
23.9 −120 51
St Patrick GNS Dublin 16 · Roll 19114T 472
−8.5%
23.4 −120 91
S N Cnoc Ainbhil Stillorgan, Co. Dublin · Roll 17979A Girls 434
−6.9%
24.1 −118 46
St Laurence's National School Dublin 13 · Roll 20437E 413
−5.1%
24.3 −117 36
St Brigids Convent Dublin 11 · Roll 16577V Girls 406
−12.5%
25.4 −116 38
St Ronans N S Dublin 22 · Roll 19707A DEIS 396
−8.8%
20.8 −119 52
S N Naomh Lorcan Stillorgan, Co. Dublin · Roll 16893I Boys 390
−12.2%
24.4 −116 50
St Helens Senior N S Portmarnock, Co. Dublin · Roll 19762I 381
+42.7%
24.5 −115 0
S N Eoin Baisde Girls Senior Dublin 3 · Roll 17148D Girls 380
−8.4%
25.3 −115 0
St Raphaelas N S Blackrock, Co. Dublin · Roll 17470I Girls 375
−20.4%
25.0 −115 21
Scoil Mhuire Boys Dublin 14 · Roll 19446V Boys 367
−19.9%
22.9 −116 40
Presentation Primary School Dublin 6W · Roll 13612F Girls 367
−37.7%
22.6 −216 20
S N Peadar agus Pol N Balbriggan, Co. Dublin · Roll 16972E 357
−24.5%
23.8 −115 99
Scoil Úna Naofa Dublin 12 · Roll 20488V DEIS 356 – 17.2 −120 42
St Canices B N S Dublin 11 · Roll 18682F BoysDEIS 355
−17.8%
22.2 −316 39
Mary, Help of Christians G.N.S. Dublin 7 · Roll 17367P Girls 352
−17.8%
23.5 −115 52
Scoil Mhuire MXD Howth, Co. Dublin · Roll 18080A 349
−3.9%
22.9 −115 38
St Georges N S Balbriggan, Co. Dublin · Roll 15315J Church of Ireland 339
−16.3%
24.7 −113 29
St Attractas Junior N S Dublin 16 · Roll 19537B 337
−2.6%
24.1 −114 72
Showing 25 of 82 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.