| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| HOLY TRINITY NATIONAL SCHOOL | 20190T | Dublin | 586 | 24.42 | 26 | 0 |
| Stepaside Educate Together National School | 20401G | Dublin | 542 | 22.08 | 26 | 0 |
| MARLEY GRANGE NS | 19574H | Dublin | 461 | 24.26 | 30 | 1 |
| CLOCHAR LORETO N S | 00729F | Dublin | 445 | 22.95 | 29 | 0 |
| Gaelscoil na Fuinseoige | 20487T | Dublin | 441 | 25.59 | 31 | 5 |
| Gaelscoil Thaobh na Coille | 20020R | Dublin | 402 | 23.65 | 28 | 0 |
| Ballinteer Educate Together National School | 20400E | Dublin | 399 | 24.19 | 27 | 0 |
| ST ATTRACTAS SENIOR N S | 19716B | Dublin | 371 | 24.33 | 31 | 3 |
| ST ATTRACTAS JUNIOR N S | 19537B | Dublin | 337 | 24.07 | 30 | 2 |
| St. Mary's National School | 02872U | Dublin | 242 | 24.20 | 30 | 1 |
| SCOIL NAITHI | 19437U | Dublin | 231 | 28.88 | 31 | 4 |
| QUEEN OF ANGELS PRIMARY SCHOOL | 19723V | Dublin | 224 | 21.80 | 29 | 0 |
| NA MAIGHDINE MUIRE GIRL | 19396J | Dublin | 200 | 21.56 | 28 | 0 |
| RATHFARNHAM EDUCATE TOGETHER | 19945Q | Dublin | 188 | 23.50 | 28 | 0 |
| Scoil an Maighdine Mhuire Boys | 19314E | Dublin | 176 | 20.75 | 29 | 0 |
| Goatstown Stillorgan Primary School | 20523U | Dublin | 170 | 23.43 | 28 | 0 |