| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| ST BRIGIDS GIRLS N S | 16353W | Dublin | 499 | 24.95 | 30 | 6 |
| Monkstown Eucate Together NS | 20060G | Dublin | 415 | 25.56 | 30 | 1 |
| ST BRIGIDS BOYS N S | 16352U | Dublin | 406 | 25.38 | 28 | 0 |
| OUR LADY GOOD COUNSEL GNS | 19321B | Dublin | 398 | 23.75 | 29 | 0 |
| OUR LADY OF GOOD COUNSEL BOYS N S | 19320W | Dublin | 389 | 24.31 | 28 | 0 |
| Gaelscoil Shliabh Rua | 20425U | Dublin | 359 | 22.44 | 29 | 0 |
| ST KEVINS N S | 19979K | Dublin | 229 | 20.82 | 29 | 0 |
| Cherrywood ETNS | 20535E | Dublin | 220 | 23.11 | 25 | 0 |
| DALKEY SCHOOL PROJECT | 19612M | Dublin | 220 | 27.50 | 30 | 1 |
| S N Gleann na gCaorach Iníon Léinín | 19400U | Dublin | 211 | 23.44 | 27 | 0 |
| KILL-O'-THE-GRANGE NS | 18886V | Dublin | 208 | 25.25 | 28 | 0 |
| ST JOHNS N S | 19960M | Dublin | 165 | 18.38 | 24 | 0 |
| SCOIL COLMCILLE SENIOR | 19438W | Dublin | 147 | 20.14 | 23 | 0 |
| SCOIL CHOLMCILLE JUNIOR NS | 19641T | Dublin | 124 | 17.71 | 27 | 0 |
| Sallynoggin Educate Together National School | 20543D | Dublin | 45 | 19.50 | 23 | 0 |