| School | Roll number | Total (latest year) | Latest average class size | Largest class | Classes 30+ |
|---|---|---|---|---|---|
| SCOIL IOSAGAIN | 19967D | 778 | 24.69 | 30 | 1 |
| SCOIL CHOILMCILLE | 18625Q | 658 | 26.96 | 28 | 0 |
| SCOIL NAOMH FIACHRA | 12077E | 519 | 25.95 | 32 | 6 |
| SCOIL MHUIRE B & C | 19927O | 489 | 24.00 | 30 | 1 |
| S N MUIRE GAN SMAL | 18052S | 480 | 24.95 | 30 | 10 |
| S N Talamh na Coille | 17728V | 467 | 22.58 | 28 | 0 |
| ST PATRICKS N S | 16672P | 426 | 24.35 | 31 | 3 |
| Letterkenny Educate Together NS | 20235P | 420 | 23.65 | 31 | 2 |
| GAELSCOIL ADHAMHNAIN | 19971R | 410 | 25.62 | 30 | 2 |
| ST MACARTANS CENTRAL | 19686S | 276 | 23.00 | 33 | 1 |
| SCOIL AN LINBH ÍOSA | 17260U | 274 | 24.91 | 34 | 2 |
| Scoil Chróine | 20421M | 265 | 22.73 | 33 | 2 |
| GLENSWILLY N S | 19313C | 262 | 23.27 | 32 | 3 |
| S N NEILL MOR | 11843O | 240 | 24.22 | 32 | 2 |
| S N NAOMH COLMCHILLE | 17036P | 231 | 24.33 | 30 | 1 |
| S N AN DROIM MOR | 16349I | 229 | 22.11 | 31 | 1 |
| ST ORANS N S | 16789N | 228 | 25.33 | 32 | 3 |
| S N MHUIRE | 18151U | 218 | 23.56 | 29 | 0 |
| S N NAOMH AONGHUS | 19359D | 218 | 25.00 | 30 | 1 |
| SCOIL AODH RUA&NUALA | 19963S | 217 | 20.10 | 26 | 0 |
| S N BAILE RAIGHIN | 19411C | 215 | 23.22 | 29 | 0 |
| SCOIL EOGHAN | 20054L | 212 | 23.56 | 32 | 2 |
| SN AN BR M O CLEIRIGH | 17268N | 211 | 26.38 | 28 | 0 |
| SCOIL MHUIRE | 19491D | 206 | 25.75 | 30 | 1 |
| Scoil Fhionáin | 17704H | 204 | 23.88 | 29 | 0 |
| SCOIL NAOMH FIONAN | 19959E | 199 | 24.88 | 32 | 1 |
| Scoil Cholmcille | 16820E | 199 | 24.88 | 32 | 1 |
| SCOIL NAOMH BRID | 19280N | 196 | 24.50 | 32 | 3 |
| HOLY FAMILY NATIONAL SCHOOL | 20150H | 193 | 25.86 | 36 | 2 |
| SCOIL BHRIDE | 18737E | 192 | 16.91 | 22 | 0 |
| DOOISH N S | 19333I | 191 | 22.50 | 30 | 2 |
| ST MURAS N S | 15627F | 189 | 23.62 | 31 | 1 |
| SCOIL NAOMH COLMCHILLE | 16880W | 186 | 26.57 | 30 | 1 |
| RAPHOE CENTRAL N S | 16138S | 185 | 26.43 | 32 | 2 |
| S N SEISEADH UI NEILL | 17607J | 167 | 20.88 | 30 | 1 |
| SCOIL MHUIRE | 18371L | 166 | 22.86 | 26 | 0 |
| SCOIL NAOMH PADRAIG BOYS | 18605K | 163 | 22.86 | 28 | 0 |
| ST PATRICKS N S | 16054M | 162 | 26.00 | 31 | 3 |
| ST FRANCIS NS | 09660R | 159 | 22.71 | 31 | 1 |
| SCOIL ADHAMHNAIN | 17828C | 158 | 25.50 | 28 | 0 |
| SCOIL MHUIRE | 19912B | 155 | 24.83 | 30 | 1 |
| St Mary's National School | 14910S | 155 | 25.00 | 35 | 1 |
| SCOIL TREASA NAOFA | 17721H | 137 | 25.00 | 28 | 0 |
| Scoil Eoin Baiste | 19252I | 136 | 26.20 | 30 | 1 |
| SCOIL NAOMH PEADAR | 18129E | 134 | 24.40 | 32 | 1 |
| SCOIL CHOLMCILLE | 18791K | 133 | 22.17 | 32 | 2 |
| St Francis' National School | 16642G | 132 | 24.40 | 28 | 0 |
| S N ADHAMHNAIN | 17503U | 131 | 21.83 | 27 | 0 |
| SCOIL CHOLMCILLE | 14194S | 127 | 19.17 | 26 | 0 |
| CLOCHAR PADRAIG NAOFA | 16821G | 124 | 17.71 | 26 | 0 |
| SCOIL NÁISIÚNTA MUIRE GAN SMÁL | 18076J | 124 | 20.67 | 33 | 1 |
| NAOMH ADHAMHNAIN | 18508M | 123 | 24.60 | 35 | 1 |
| GLEBE NS | 17831O | 121 | 24.20 | 28 | 0 |
| SCOIL PHADRAIG | 18520C | 121 | 24.20 | 28 | 0 |
| RATHMULLEN N S | 15729N | 119 | 23.80 | 27 | 0 |
| SCOIL NAOMH PROINNSEAS | 17729A | 119 | 23.80 | 26 | 0 |
| SCOIL MHUIRE | 18517N | 118 | 23.60 | 32 | 1 |
| Scoil Phádraig | 17057A | 118 | 23.60 | 29 | 0 |
| S N NAOMH BAOITHIN | 19518U | 113 | 20.20 | 27 | 0 |
| S N NAOMH NAILLE | 15770K | 113 | 22.60 | 32 | 1 |
| SCOIL CHARTHA NAOFA | 19685Q | 111 | 20.20 | 26 | 0 |
| NAOMH BODAIN | 19614Q | 108 | 27.00 | 31 | 1 |
| SN CHONAILL | 18219F | 107 | 18.40 | 29 | 0 |
| SCOIL PHADRAIG | 17018N | 103 | 25.75 | 32 | 1 |
| COMHSCOIL CHONMHA S N | 05230S | 100 | 25.00 | 33 | 1 |
| SCOIL MHUIRE B&C | 14502D | 97 | 19.40 | 24 | 0 |
| S N na gCluainte | 17180W | 96 | 24.00 | 28 | 0 |
| S N MUIRE GAN SMAL | 18131O | 94 | 23.50 | 26 | 0 |
| SCOIL NAOMH EARNAN | 19310T | 94 | 23.50 | 27 | 0 |
| NAOMH BRIDHID | 16836T | 92 | 23.00 | 28 | 0 |
| S N DHUBHTHAIGH | 19343L | 91 | 18.20 | 21 | 0 |
| ROBERTSON N S | 18731P | 89 | 22.25 | 28 | 0 |
| S N Cnoc na Naomh | 16671N | 87 | 21.75 | 24 | 0 |
| SN AN LEINBH IOSA | 17598L | 84 | 21.00 | 23 | 0 |
| SN DUN CEANNFHAOLAIDH | 18421A | 82 | 20.50 | 26 | 0 |
| MOYLE N S | 19633U | 81 | 20.25 | 26 | 0 |
| S N NAOMH COLMCHILLE | 16995Q | 81 | 20.25 | 26 | 0 |
| FROSSES N S | 16375J | 77 | 19.25 | 23 | 0 |
| SCOIL CHOLMCHILLE | 14631O | 77 | 19.25 | 25 | 0 |
| SCOIL NAOMH CHAITRIONA | 17945G | 77 | 19.25 | 23 | 0 |
| GAELSCOIL CHOIS FEABHAILL | 20144M | 75 | 18.75 | 20 | 0 |
| KILLYBEGS COMMON N S | 16608G | 75 | 18.75 | 34 | 1 |
| S N NAOMH EIGHNEACH | 18114O | 75 | 18.75 | 24 | 0 |
| S N na hAcrai | 18286U | 70 | 23.33 | 30 | 1 |
| SCOIL NAOMH CHOLMCILLE | 18241V | 68 | 22.67 | 25 | 0 |
| ST CONALS | 19756N | 68 | 22.67 | 25 | 0 |
| GAELSCOIL BHUN CRANNACH | 20097G | 67 | 22.33 | 28 | 0 |
| ROBERTSON N S | 13872I | 67 | 22.33 | 25 | 0 |
| S N BAILE AN CAISLEAN | 18700E | 66 | 22.00 | 23 | 0 |
| S N NAOMH BRID | 19228L | 66 | 22.00 | 31 | 1 |
| S N NAOMH PADRAIG | 01572D | 64 | 21.33 | 26 | 0 |
| SCOIL MHUIRE | 18120J | 64 | 21.33 | 22 | 0 |
| Scoil an tStratha Mhóir | 15208I | 64 | 21.33 | 28 | 0 |
| S N OLIBHEAR PLUINCEID | 18007N | 61 | 20.33 | 22 | 0 |
| S N na Carraige | 18611F | 59 | 19.67 | 26 | 0 |
| S N AN CHAISEAL | 18652T | 58 | 19.33 | 20 | 0 |
| S N GLEANN COIMHEAD | 17575W | 57 | 19.00 | 20 | 0 |
| SCOIL NAOMH MHUIRE | 18446Q | 57 | 19.00 | 20 | 0 |
| Gaelscoil na gCeithre Maistri | 20096E | 55 | 18.33 | 23 | 0 |
| S N TAODHBHOG | 17553M | 55 | 18.33 | 22 | 0 |
| S N AN CHOIMIN | 17564R | 54 | 18.00 | 22 | 0 |
| S N CRANNAIGHE BUIDHE | 17447N | 54 | 18.00 | 22 | 0 |
| SCOIL MHUIRE | 17837D | 54 | 18.00 | 22 | 0 |
| S N CEATHRU CAOL | 17549V | 53 | 17.67 | 26 | 0 |
| SCOIL NAOMH TREASA C | 16108J | 52 | 17.33 | 20 | 0 |
| RAY N S | 14941G | 51 | 17.00 | 19 | 0 |
| SCOIL ROISIN | 17328F | 51 | 17.00 | 18 | 0 |
| MURROE NATIONAL SCHOOL | 14704P | 50 | 14.67 | 15 | 0 |
| ROCKFIELD N S | 09009Q | 49 | 16.33 | 18 | 0 |
| BROWNEKNOWE N S | 07464H | 48 | 16.00 | 19 | 0 |
| CRANFORD N S | 19009W | 48 | 16.00 | 19 | 0 |
| MONREAGH N S | 07143K | 48 | 16.00 | 18 | 0 |
| S N BAILE AN BHAILSIG | 18703K | 47 | 23.50 | 24 | 0 |
| GLENEELY N S | 18172F | 45 | 15.00 | 16 | 0 |
| SCOIL NAOMH IÓSAF | 01574H | 45 | 15.00 | 16 | 0 |
| KILBARRON N S | 10595Q | 44 | 14.67 | 18 | 0 |
| S N Caiseal na gCorr | 03294L | 44 | 14.67 | 17 | 0 |
| Scoil Mhuire | 18844F | 42 | 21.00 | 22 | 0 |
| S N AN IORBALL RIABAIGH | 07626H | 40 | 20.00 | 25 | 0 |
| S N GORT AN CHOIRCE | 16819T | 40 | 16.50 | 17 | 0 |
| SN Naomh Samhthann | 17040G | 40 | 13.33 | 16 | 0 |
| MIN A GHABHANN N S | 16823K | 39 | 19.50 | 21 | 0 |
| SCOIL CUILM CILLE | 17469A | 38 | 19.00 | 21 | 0 |
| SCOIL CHOLMCILLE | 18766L | 37 | 18.50 | 21 | 0 |
| DRUMFAD N S | 16137Q | 35 | 17.50 | 18 | 0 |
| S N DONAIGH | 18939Q | 33 | 16.50 | 17 | 0 |
| S N TRIANTA | 18319J | 33 | 16.50 | 22 | 0 |
| S N na Croise Naofa | 18710H | 33 | 16.50 | 25 | 0 |
| ST GARVANS N.S. | 16850N | 33 | 16.50 | 19 | 0 |
| AYR HILL N S RAMELTON | 18251B | 32 | 16.00 | 18 | 0 |
| MOVILLE N S | 15763N | 32 | 16.00 | 17 | 0 |
| S N FOTHAR | 16903I | 32 | 16.00 | 18 | 0 |
| CREESLOUGH N S | 10062E | 31 | 15.50 | 16 | 0 |
| SCOIL CHOLUIM | 16279N | 30 | 15.00 | 18 | 0 |
| GAELSCOIL EIRNE | 20167B | 29 | 14.50 | 18 | 0 |
| CASHELSHANAGHAN N S | 15170J | 28 | 14.00 | 14 | 0 |
| S N CHOLMCILLE | 19260H | 28 | 14.00 | 16 | 0 |
| S N GLASAIN | 16763S | 28 | 9.33 | 12 | 0 |
| SCOIL BHRIGHDE | 17822N | 28 | 14.00 | 15 | 0 |
| SCOIL NAOMH DUBHTHACH | 17130H | 27 | 13.50 | 16 | 0 |
| ST DAVADOGS N S | 16471F | 27 | 13.50 | 14 | 0 |
| BUNCRANA N S | 16854V | 26 | 13.00 | 14 | 0 |
| ST RIAGHANS NS | 17716O | 26 | 13.00 | 15 | 0 |
| S N LOCH AN IUBHAIR | 16829W | 25 | 10.50 | 13 | 0 |
| DUNFANAGHY N S | 18086M | 24 | 12.00 | 14 | 0 |
| S N AN BHREACAIGH | 16869L | 24 | 9.50 | 14 | 0 |
| SCOIL NAOMH SEOSAMH | 18058H | 24 | 12.00 | 14 | 0 |
| KILLYGORDAN N S | 18874O | 22 | 11.00 | 12 | 0 |
| S N DOMHNACH MOR | 17241Q | 22 | 11.00 | 14 | 0 |
| GLENMAQUIN NO 2 N S | 09748I | 21 | 10.50 | 12 | 0 |
| S N MHIN TEINEADH DE | 17035N | 21 | 10.50 | 11 | 0 |
| SN ARAINN MHOR II | 16384K | 21 | 10.50 | 13 | 0 |
| INVER N S | 16458N | 20 | 10.00 | 11 | 0 |
| PORTLEAN N S | 19235I | 20 | 10.00 | 14 | 0 |
| GARTAN N S | 13755E | 19 | 9.50 | 11 | 0 |
| BRUCKLESS N S | 16664Q | 18 | 9.00 | 10 | 0 |
| SCOIL NAOMH CHOLMCILLE | 05164I | 18 | 9.00 | 11 | 0 |
| SCOIL CHOLMCILLE NAOFA | 17956L | 17 | 8.50 | 11 | 0 |
| GORTNACART N S | 15554E | 16 | 8.00 | 9 | 0 |
| S N LEITIR MHIC AN BHAIRD | 15847T | 16 | 8.00 | 11 | 0 |
| S N MIN AN AOIRE | 18295V | 14 | 7.00 | 9 | 0 |
| SCOIL AN AINGIL CHOIMHEADAI | 04809A | 14 | 7.00 | 8 | 0 |
| GLENTOGHER CON N S | 16611S | 13 | 6.50 | 7 | 0 |
| SN ARAINN MHOR I | 15955W | 13 | 6.50 | 7 | 0 |
| ARDARA MIXED N S | 01733B | 12 | 6.00 | 7 | 0 |
| KILLAGHTEE N S | 19089A | 12 | 6.00 | 7 | 0 |
| SN EADAN FHIONNFHAOICH | 17122I | 10 | 5.00 | 6 | 0 |
| S N BAILE MOR | 18250W | 7 | 3.50 | 5 | 0 |
| S N CHILL COINNIGH | 13563S | 5 | 5.00 | 5 | 0 |
| S N FHIONNTRA | 16357H | 5 | 2.50 | 3 | 0 |
| S N DUCHORAIDH | 16837V | 4 | 4.00 | 4 | 0 |