| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| SCOIL MHUIRE | 19912B | Donegal | 155 | 24.83 | 30 | 1 |
| S N MUIRE GAN SMAL | 18131O | Donegal | 94 | 23.50 | 26 | 0 |
| ST CONALS | 19756N | Donegal | 68 | 22.67 | 25 | 0 |
| S N CRANNAIGHE BUIDHE | 17447N | Donegal | 54 | 18.00 | 22 | 0 |
| MIN A GHABHANN N S | 16823K | Donegal | 39 | 19.50 | 21 | 0 |
| S N CHOLMCILLE | 19260H | Donegal | 28 | 14.00 | 16 | 0 |
| ST RIAGHANS NS | 17716O | Donegal | 26 | 13.00 | 15 | 0 |
| S N AN BHREACAIGH | 16869L | Donegal | 24 | 9.50 | 14 | 0 |
| S N MHIN TEINEADH DE | 17035N | Donegal | 21 | 10.50 | 11 | 0 |
| GORTNACART N S | 15554E | Donegal | 16 | 8.00 | 9 | 0 |
| S N LEITIR MHIC AN BHAIRD | 15847T | Donegal | 16 | 8.00 | 11 | 0 |
| ARDARA MIXED N S | 01733B | Donegal | 12 | 6.00 | 7 | 0 |
| SN EADAN FHIONNFHAOICH | 17122I | Donegal | 10 | 5.00 | 6 | 0 |
| S N CHILL COINNIGH | 13563S | Donegal | 5 | 5.00 | 5 | 0 |