| School | Roll number | County | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|---|
| Scoil Mhuire na nGael | 19598V | Louth | 624 | 23.08 | 30 | 1 |
| ST JOSEPHS N S | 19673J | Louth | 574 | 21.58 | 25 | 0 |
| C.B.S. PRIMARY | 17195M | Louth | 524 | 24.67 | 30 | 3 |
| Scoil na gCreagacha Dubha | 15285D | Louth | 503 | 26.16 | 33 | 5 |
| RÉALT NA MARA SCHOOL | 20339E | Louth | 467 | 23.00 | 29 | 0 |
| St. Francis National School | 20259G | Louth | 441 | 26.81 | 30 | 1 |
| KNOCKBRIDGE MIXED N S | 15101N | Louth | 285 | 21.92 | 32 | 1 |
| S N N MAOLMHAODHAGH B | 18504E | Louth | 246 | 24.60 | 32 | 2 |
| DROMISKIN MIXED N S | 16760M | Louth | 234 | 24.11 | 33 | 1 |
| S N N MAOLMHAODHAGH C | 15259C | Louth | 233 | 25.89 | 35 | 3 |
| SCOIL FHURSA | 17550G | Louth | 229 | 24.78 | 32 | 1 |
| S N N MAOLMHAODHAGH N | 15260K | Louth | 220 | 24.44 | 26 | 0 |
| GAELSCOIL DHUN DEALGAN | 19892V | Louth | 214 | 17.33 | 27 | 0 |
| SCOIL PHADRAIG NAOFA | 18186Q | Louth | 206 | 25.75 | 29 | 0 |
| CASTLETOWN RD CONVENT | 14651U | Louth | 191 | 19.10 | 23 | 0 |
| SCOIL MHUIRE GAN SMÁL | 16749B | Louth | 189 | 23.62 | 29 | 0 |
| ST. MOCHTA'S NATIONAL SCHOOL | 01553W | Louth | 181 | 21.12 | 29 | 0 |
| S N AN TSLANAITHEORA B | 19246N | Louth | 169 | 19.62 | 28 | 0 |
| S.N EOIN BAISTE | 20163Q | Louth | 164 | 19.75 | 28 | 0 |
| St Nicholas Monastery NS | 16469S | Louth | 164 | 19.75 | 25 | 0 |
| SN CHILL SARAIN | 14207B | Louth | 161 | 19.57 | 28 | 0 |
| S N AN TSLANAITHEORA C | 19247P | Louth | 160 | 16.38 | 19 | 0 |
| DULARGY MIXED N S | 13670T | Louth | 150 | 25.00 | 30 | 1 |
| S N SAN NIOCLAS | 18347O | Louth | 148 | 22.83 | 24 | 0 |
| BELLURGAN N S | 16249E | Louth | 112 | 20.00 | 27 | 0 |
| Faughart Community National School | 18391R | Louth | 102 | 25.50 | 31 | 1 |
| DUN DEALGAN N S | 14069P | Louth | 84 | 21.00 | 26 | 0 |
| SCOIL BHRIDE | 18382Q | Louth | 82 | 19.00 | 24 | 0 |
| SCOIL DAIRBHRE MIXED | 17315T | Louth | 71 | 17.75 | 24 | 0 |