| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| Scoil Mhuire | 20432R | Leitrim | 442 | 27.62 | 33 | 8 |
| ST PATRICKS NS | 19423J | Leitrim | 243 | 25.11 | 33 | 1 |
| MOHILL N S | 20203C | Leitrim | 239 | 29.12 | 32 | 6 |
| LEITRIM MXD N S | 01125B | Leitrim | 220 | 27.50 | 30 | 3 |
| ANNADUFF MXD N S | 13656C | Leitrim | 191 | 22.38 | 28 | 0 |
| ST BRIDS | 19519W | Leitrim | 142 | 22.33 | 24 | 0 |
| SCOIL MHUIRE | 19554B | Leitrim | 124 | 24.80 | 28 | 0 |
| NAOMH CAILLIN | 15194A | Leitrim | 115 | 23.00 | 32 | 1 |
| GORTLETTERAGH CENTRAL | 15960P | Leitrim | 72 | 24.00 | 26 | 0 |
| FAITIMA N S | 18741S | Leitrim | 63 | 21.00 | 28 | 0 |
| ST JOSEPHS N S | 16130C | Leitrim | 56 | 18.67 | 24 | 0 |
| S N NAOMH BRIGHID | 18492A | Leitrim | 55 | 18.33 | 22 | 0 |
| AUGHAVAS NS | 14339S | Leitrim | 42 | 21.00 | 28 | 0 |
| ARDVARNEY MXD N S | 15116D | Leitrim | 30 | 15.00 | 17 | 0 |