| School | Roll number | County | Total (latest year) |
|---|---|---|---|
| St Cóman's Wood Primary School | 20498B | Roscommon | 619 |
| Abbey Primary School | 20573M | Roscommon | 418 |
| S N Cluain na Cille | 18395C | Roscommon | 398 |
| TARMON N S | 13757I | Roscommon | 276 |
| S N CNOC AN SAMHRAIDH | 12754U | Roscommon | 249 |
| S N Cor na Fola B | 01607T | Roscommon | 238 |
| ROXBORO N S | 18742U | Roscommon | 221 |
| BALLYBAY NATIONAL SCHOOL | 19534S | Roscommon | 215 |
| S N CRUACHAIN | 18012G | Roscommon | 171 |
| ABBEYCARTON NS | 19809I | Roscommon | 161 |
| N MICHEAL AGUS PADRAIG | 19720P | Roscommon | 156 |
| ROOSKEY N S | 04800F | Roscommon | 156 |
| S N AN GLEANN DUIBH | 18626S | Roscommon | 141 |
| S N CNOC AN CHROCAIRE | 18571T | Roscommon | 138 |
| ST ANNES CON N S | 13198V | Roscommon | 135 |
| ST MARY'S PRIMARY | 17808T | Roscommon | 130 |
| S N NAOMH SEOSAMH | 12964I | Roscommon | 125 |
| S N PADRAIG NAOFA | 17748E | Roscommon | 115 |
| Scoil Bhríde | 19815D | Roscommon | 110 |
| ATHLEAGUE N S | 15308M | Roscommon | 108 |
| LISANISKEY N S | 14356S | Roscommon | 107 |
| WHITEHALL N S | 14049J | Roscommon | 99 |
| S N LIOS A CUILL M | 13047A | Roscommon | 98 |
| Dangan NS | 17571O | Roscommon | 89 |
| S N ARD CIANAIN | 17054R | Roscommon | 84 |
| S N BAILE UI FHIDHNE | 18432F | Roscommon | 84 |
| St. Bride's N.S. | 16334S | Roscommon | 84 |
| S N NAOMH TREASA | 18454P | Roscommon | 80 |
| Cloontuskert National School | 18116S | Roscommon | 75 |
| TULSK N S | 16034G | Roscommon | 73 |
| SCOIL MHUIRE | 18061T | Roscommon | 71 |
| CIARAN NAOFA | 18194P | Roscommon | 66 |
| BALLYFORAN MIXED N S | 01866U | Roscommon | 64 |
| BRIDESWELL N S | 15413J | Roscommon | 63 |
| BALLANAGARE N S | 17266J | Roscommon | 60 |
| CLOVER HILL N S | 13262E | Roscommon | 58 |
| TIBOHINE N S | 15543W | Roscommon | 57 |
| S N POL NAOFA | 01086R | Roscommon | 54 |
| S N MHUIRE LOURDES | 18536R | Roscommon | 52 |
| TISRARA NATIONAL SCHOOL | 18165I | Roscommon | 51 |
| GORTHAGANNY N S | 16127N | Roscommon | 49 |
| S N NAOMH PADRAIG | 15045G | Roscommon | 49 |
| S N CILL TROSTAIN | 17353E | Roscommon | 48 |
| S N NAOMH EOIN | 14925I | Roscommon | 48 |
| BALLINTLEVA N S | 18729F | Roscommon | 47 |
| DON N S | 15255R | Roscommon | 43 |
| CLOONFOUR N S | 13498K | Roscommon | 40 |
| CLOONIQUIN N S | 18027T | Roscommon | 39 |
| THREEN N S | 10967E | Roscommon | 39 |
| FAIRYMOUNT N S | 15425Q | Roscommon | 38 |
| CASTLEPLUNKETT N S | 15545D | Roscommon | 37 |
| CARRICK N S | 13839K | Roscommon | 36 |
| KILTEEVAN N S | 14966W | Roscommon | 36 |
| NAOMH ATRACHTA | 18182I | Roscommon | 33 |
| CLONOWN N S | 16427C | Roscommon | 32 |
| GRANGE N S | 15584N | Roscommon | 31 |
| AUGHRIM N S | 14684M | Roscommon | 30 |
| S N MICHIL NAOFA | 05220P | Roscommon | 25 |
| MOUNT TALBOT N S | 14056G | Roscommon | 24 |
| CLOONBONNIF N S | 11242L | Roscommon | 21 |
| CLOONCAGH N S | 16291D | Roscommon | 21 |
| S N O DUBHLAIN | 17849K | Roscommon | 19 |
| S N NAOMH PADRAIG | 11201U | Roscommon | 16 |
| SLATTA N S | 13879W | Roscommon | 16 |
| S N RATH ARADH | 17100V | Roscommon | 15 |
| SCOIL MHUIRE GAN SMAL | 18005J | Roscommon | 15 |
| S N NAOMH MHUIRE | 17709R | Roscommon | 14 |
| LISMOIL N S | 11466K | Roscommon | 13 |
| S N NAOMH CEITHEACH | 16815L | Roscommon | 12 |