| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| Holy Rosary Primary School | 19878E | Dublin | 525 | 21.88 | 25 | 0 |
| St Dominic's National School | 20468P | Dublin | 410 | 18.09 | 20 | 0 |
| SCOIL MAELRUAIN SENIOR | 19463V | Dublin | 386 | 24.12 | 27 | 0 |
| ST MARTIN DE PORRES N S | 19617W | Dublin | 383 | 23.19 | 27 | 0 |
| SCOIL TREASA FIRHOUSE | 19565G | Dublin | 377 | 23.31 | 26 | 0 |
| SCOIL MAELRUAIN JUNIOR | 19462T | Dublin | 369 | 22.69 | 25 | 0 |
| Firhouse Educate Together National School | 20411J | Dublin | 355 | 21.44 | 26 | 0 |
| SCOIL CARMEL | 17899C | Dublin | 313 | 21.50 | 26 | 0 |
| SCOIL CHAITLIN MAUDE | 19872P | Dublin | 284 | 17.12 | 21 | 0 |
| Gaelscoil na Giúise | 20412L | Dublin | 278 | 22.17 | 34 | 2 |
| SCOIL SANTAIN | 19646G | Dublin | 262 | 19.69 | 27 | 0 |
| S N an Croi Ro Naofa | 19543T | Dublin | 213 | 21.00 | 25 | 0 |
| AN CHROI RO NAOFA SOIS | 19652B | Dublin | 167 | 15.50 | 19 | 0 |
| SCOIL CNOC MHUIRE SIN | 19613O | Dublin | 145 | 19.00 | 25 | 0 |
| SCOIL CNOC MHUIRE JUNIOR | 19775R | Dublin | 141 | 12.90 | 17 | 0 |
| Glen na Smol N S | 17996A | Dublin | 56 | 18.67 | 25 | 0 |