| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| ST CLARES PRIMARY SCHOOL | 08490N | Cavan | 548 | 18.72 | 24 | 0 |
| VIRGINIA MXD N S | 16083T | Cavan | 463 | 22.85 | 32 | 1 |
| ST CLARES NS | 19983B | Cavan | 422 | 24.12 | 29 | 0 |
| ST KILLIANS N S | 19608V | Cavan | 328 | 22.14 | 28 | 0 |
| BAILIEBORO N S | 18059J | Cavan | 288 | 16.87 | 28 | 0 |
| SN NAOMH FEIDHLIM BOYS SNR SCH | 17326B | Cavan | 265 | 17.93 | 22 | 0 |
| BUTLERSBRIDGE NS | 19326L | Cavan | 261 | 25.50 | 31 | 3 |
| St Michaels National School | 20277I | Cavan | 232 | 17.85 | 24 | 0 |
| S N Beal Atha na nEach | 16921K | Cavan | 229 | 24.11 | 32 | 2 |
| DROMAILI S N | 11541V | Cavan | 213 | 23.67 | 29 | 0 |
| BALLYCONNELL MXD N S | 16093W | Cavan | 199 | 22.62 | 28 | 0 |
| KILLYGARRY N S | 14399N | Cavan | 198 | 24.75 | 28 | 0 |
| S N LEITIR | 18564W | Cavan | 187 | 26.71 | 32 | 2 |
| CASTLETARA N S | 14073G | Cavan | 183 | 23.57 | 31 | 1 |
| SEARCOG I N S | 14336M | Cavan | 183 | 26.14 | 32 | 2 |
| S N CRUABANAI | 08453H | Cavan | 174 | 24.86 | 32 | 2 |
| MILLTOWN N S | 08948L | Cavan | 173 | 23.00 | 28 | 0 |
| CONVENT OF MERCY N S | 16057S | Cavan | 163 | 23.29 | 27 | 0 |
| Cnoc an Teampaill | 17625L | Cavan | 158 | 23.50 | 29 | 0 |
| BALLYHAISE N S | 17780A | Cavan | 152 | 24.33 | 26 | 0 |
| KILLINKERE N S | 15502I | Cavan | 151 | 21.57 | 29 | 0 |
| S N Doire na Ceise | 17601U | Cavan | 143 | 22.83 | 30 | 1 |
| S N LATHRACH | 18833A | Cavan | 140 | 28.00 | 35 | 1 |
| KILL N S | 19285A | Cavan | 126 | 25.20 | 30 | 1 |
| CROSSKEYS CENTRAL N S | 19432K | Cavan | 118 | 23.60 | 28 | 0 |
| Baile na Mona | 17531C | Cavan | 108 | 21.60 | 25 | 0 |
| SCOIL NAOMH BRID | 17230L | Cavan | 108 | 18.00 | 26 | 0 |
| KILNALECK MIXED N S | 01356U | Cavan | 106 | 21.20 | 28 | 0 |
| S N CARRAIG A BRUIS | 18857O | Cavan | 103 | 19.80 | 26 | 0 |
| ST MARYS N S | 16316Q | Cavan | 102 | 20.40 | 24 | 0 |
| CASTLERAHAN CENTRAL NS | 19418Q | Cavan | 96 | 21.00 | 25 | 0 |
| DRUMKILLY NS | 19202Q | Cavan | 96 | 24.00 | 28 | 0 |
| S N CILLIN | 18393V | Cavan | 94 | 23.50 | 29 | 0 |
| CROSSERLOUGH N S | 19596R | Cavan | 93 | 23.25 | 27 | 0 |
| SCOIL MHUIRE | 17479D | Cavan | 92 | 23.00 | 26 | 0 |
| Aughadreena National School | 18355N | Cavan | 87 | 21.75 | 25 | 0 |
| SCOIL BHRIDE | 16390F | Cavan | 85 | 16.75 | 20 | 0 |
| S N TAMHNACH DHUIBH | 17240O | Cavan | 83 | 20.75 | 24 | 0 |
| S N AODHAIN NAOFA | 19679V | Cavan | 76 | 19.00 | 24 | 0 |
| SN MHUIRE BOYS SENIOR SCHOOL | 18127A | Cavan | 74 | 24.67 | 30 | 1 |
| KILLYCONNAN N S | 15120R | Cavan | 72 | 18.00 | 24 | 0 |
| S N GREACH RATHAIN | 18346M | Cavan | 69 | 23.00 | 28 | 0 |
| S N NAOMH MAODHOG | 17440W | Cavan | 68 | 22.67 | 24 | 0 |
| S N CORR LORGAN | 18518P | Cavan | 65 | 21.67 | 23 | 0 |
| ST PATRICKS | 19568M | Cavan | 63 | 21.00 | 24 | 0 |
| ST PATRICKS N S | 19871N | Cavan | 60 | 20.00 | 25 | 0 |
| S N MHUIRE | 08143P | Cavan | 57 | 19.00 | 23 | 0 |
| S N MAODHOG | 17630E | Cavan | 54 | 18.00 | 22 | 0 |
| S N PADRAIG | 18340A | Cavan | 51 | 17.00 | 20 | 0 |
| ST MICHAELS N. S. | 20134J | Cavan | 50 | 16.00 | 20 | 0 |
| S N DROM CNAMH | 17990L | Cavan | 47 | 15.67 | 19 | 0 |
| St Patrick's NS | 06998Q | Cavan | 47 | 15.67 | 20 | 0 |
| KILDALLON N S | 15452T | Cavan | 46 | 15.33 | 18 | 0 |
| ST MARY'S N.S. | 16520P | Cavan | 31 | 15.50 | 16 | 0 |
| S N CORRABHA | 16959M | Cavan | 20 | 10.00 | 13 | 0 |
| CORLISS N S | 10146K | Cavan | 19 | 9.50 | 15 | 0 |
| CORONEA N S | 16767D | Cavan | 14 | 7.00 | 8 | 0 |