| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| HOLY FAMILY SENIOR N S | 19877C | Dublin | 624 | 25.25 | 27 | 0 |
| Holywell Educate Together National School | 20348F | Dublin | 613 | 24.29 | 29 | 0 |
| HOLY FAMILY JUNIOR N S | 19721R | Dublin | 565 | 23.54 | 25 | 0 |
| BRACKENSTOWN SENIOR N S | 19535U | Dublin | 530 | 22.26 | 26 | 0 |
| ST CRONANS JUNIOR NATIONAL SCHOOL | 19456B | Dublin | 498 | 24.30 | 28 | 0 |
| GAELSCOIL BHRIAN BÓROIMHE | 20095C | Dublin | 441 | 27.56 | 29 | 0 |
| Swords Educate Together NS | 20145O | Dublin | 394 | 23.88 | 27 | 0 |
| BRIGHDE NAOFA | 17820J | Dublin | 357 | 23.00 | 29 | 0 |
| S N CHOLMCILLE C | 18977B | Dublin | 326 | 20.00 | 28 | 0 |
| S N CHOLMILLE B | 18976W | Dublin | 320 | 22.07 | 30 | 1 |
| Thornleigh Educate Together National School | 20302E | Dublin | 313 | 18.81 | 23 | 0 |
| MARY QUEEN OF IRELAND N S | 19693P | Dublin | 95 | 20.75 | 26 | 0 |
| SWORDS BOROUGH N S | 12358M | Dublin | 84 | 21.00 | 26 | 0 |
| Broadmeadow Community National School | 20529J | Dublin | 80 | 18.50 | 22 | 0 |