| Joint School District No. 2 | Meridian | PK–12 | 38,740 |
| Boise Independent District | Boise | PK–12 | 22,134 |
| Bonneville Joint District | Idaho Falls | PK–12 | 13,577 |
| Nampa School District | Nampa | PK–12 | 12,689 |
| Pocatello District | Pocatello | PK–12 | 11,448 |
| Vallivue School District | Caldwell | PK–12 | 10,339 |
| Idaho Falls District | Idaho Falls | PK–12 | 9,903 |
| Coeur D'alene District | Coeur D'alene | PK–12 | 9,609 |
| Twin Falls District | Twin Falls | PK–12 | 9,000 |
| Oneida County District | Malad | PK–12 | 8,702 |
| Jefferson County Joint District | Rigby | PK–12 | 6,591 |
| Post Falls District | Post Falls | PK–12 | 5,779 |
| Kuna Joint District | Kuna | PK–12 | 5,778 |
| Madison District | Rexburg | PK–12 | 5,720 |
| Cassia County Joint District | Burley | PK–12 | 5,484 |
| Caldwell District | Caldwell | PK–12 | 5,134 |
| Lakeland District | Rathdrum | PK–12 | 4,568 |
| Lewiston Independent District | Lewiston | PK–12 | 4,491 |
| Middleton District | Middleton | PK–12 | 4,306 |
| Minidoka County Joint District | Rupert | PK–12 | 4,267 |
| Jerome Joint District | Jerome | PK–12 | 3,998 |
| Blackfoot District | Blackfoot | PK–12 | 3,796 |
| Snake River District | Blackfoot | PK–12 | 3,730 |
| Lake Pend Oreille School District | Ponderay | PK–12 | 3,653 |
| Mountain Home District | Mountain Home | PK–12 | 3,647 |
| Blaine County District | Hailey | PK–12 | 3,102 |
| Shelley Joint District | Shelley | PK–12 | 2,512 |
| Emmett Independent District | Emmett | PK–12 | 2,472 |
| Preston Joint District | Preston | PK–12 | 2,311 |
| Sugar-Salem Joint District | Sugar City | PK–12 | 2,302 |
| Moscow District | Moscow | PK–12 | 2,295 |
| Kimberly District | Kimberly | PK–12 | 2,195 |
| Fremont County Joint District | St Anthony | PK–12 | 2,179 |
| Idaho Virtual Academy Inc. | Meridian | K–12 | 2,063 |
| Teton County District | Driggs | PK–12 | 1,962 |
| Isucceed Virtual High School Inc. | Boise | 7–12 | 1,635 |
| Fruitland District | Fruitland | PK–12 | 1,551 |
| Filer District | Filer | PK–12 | 1,550 |
| American Falls Joint District | American Falls | PK–12 | 1,514 |
| Boundary County District | Bonners Ferry | PK–12 | 1,455 |
| Weiser District | Weiser | PK–12 | 1,442 |
| Bear Lake County District | Paris | PK–12 | 1,417 |
| Idaho Arts Charter School Inc. | Nampa | PK–12 | 1,395 |
| Mccall-Donnelly Joint School District | Mccall | PK–12 | 1,374 |
| Inspire Academics Inc. | Boise | K–12 | 1,373 |
| Homedale Joint District | Homedale | PK–12 | 1,318 |
| Payette Joint District | Payette | PK–12 | 1,274 |
| Compass Public Charter School Inc. | Meridian | K–12 | 1,265 |
| Buhl Joint District | Buhl | PK–12 | 1,198 |
| Gooding Joint District | Gooding | PK–12 | 1,189 |
| Wendell District | Wendell | PK–12 | 1,104 |
| Kellogg Joint District | Kellogg | PK–12 | 1,098 |
| Orofino Joint District | Orofino | PK–12 | 1,090 |
| Marsh Valley Joint District | Arimo | PK–12 | 1,064 |
| Mountain View School District | Grangeville | PK–12 | 1,048 |
| The Sage International School of Boise A Public Charter Sch | Boise | K–12 | 1,033 |
| North Star Charter School Inc. | Eagle | K–12 | 1,022 |
| Parma District | Parma | PK–12 | 1,003 |
| West Bonner County District | Priest River | PK–12 | 927 |
| New Plymouth District | New Plymouth | PK–12 | 898 |
| St Maries Joint District | St Maries | PK–12 | 882 |
| Soda Springs Joint District | Soda Springs | PK–12 | 843 |
| Melba Joint District | Melba | PK–12 | 824 |
| Marsing Joint District | Marsing | PK–12 | 816 |
| Firth District | Firth | PK–12 | 808 |
| The Academy Inc. | Chubbuck | K–8 | 806 |
| West Side Joint District | Dayton | PK–12 | 798 |
| Vision Charter School Inc. | Caldwell | K–12 | 760 |
| Idaho Virtual High School Inc. | Mountain Home | K–12 | 741 |
| Ririe Joint District | Ririe | PK–12 | 719 |
| Xavier Charter School Inc. | Twin Falls | K–12 | 654 |
| White Pine Charter School Inc. | Ammon | K–12 | 651 |
| Salmon District | Salmon | PK–12 | 647 |
| Aberdeen District | Aberdeen | PK–12 | 625 |
| West Jefferson District | Terreton | PK–12 | 622 |
| Wilder District | Wilder | PK–12 | 610 |
| Coeur D'alene Charter Academy Inc. | Coeur D'alene | 6–12 | 593 |
| Treasure Valley Classical Academy Inc. | Fruitland | K–11 | 589 |
| Hayden Canyon Charter School Inc. | Hayden | K–8 | 576 |
| Anser of Idaho Inc. | Garden City | PK–8 | 573 |
| Alturas International Academy Inc. | Idaho Falls | K–5 | 572 |
| American Heritage Charter School Inc. | Idaho Falls | K–12 | 560 |
| North Idaho Stem Charter Academy Inc. | Rathdrum | K–12 | 553 |
| Grace Joint District | Grace | PK–12 | 548 |
| Gem Prep: Nampa Llc | Nampa | K–12 | 529 |
| Kootenai Classical Academy Inc | Post Falls | PK–9 | 528 |
| Mosaics Public School Inc. | Caldwell | K–8 | 527 |
| Shoshone Joint District | Shoshone | PK–12 | 515 |
| Heritage Community Charter School Inc. | Caldwell | K–8 | 512 |
| Gem Prep: Meridian Llc | Meridian | K–12 | 506 |
| Valley District | Hazelton | PK–12 | 499 |
| Elevate Academy Nampa Llc | Nampa | 6–12 | 496 |
| Elevate Academy Inc. | Caldwell | 6–12 | 493 |
| Wallace District | Silverton | PK–12 | 489 |
| Sage International School Middleton Llc | Middleton | K–11 | 482 |
| Lapwai District | Lapwai | PK–12 | 480 |
| Gem Prep: Pocatello Llc | Chubback | K–12 | 476 |
| Gem Prep: Meridian North Llc | Meridian | K–11 | 474 |
| Alturas Preparatory Academy Inc | Idaho Falls | 6–12 | 463 |
| Gem Prep: Meridian South Llc | Meridian | K–10 | 458 |
| Potlatch District | Potlatch | PK–12 | 448 |
| Blackfoot Charter Community Learning Center Inc. | Blackfoot | PK–8 | 433 |
| Cottonwood Joint District | Cottonwood | PK–12 | 426 |
| Liberty Charter School Inc. | Nampa | PK–12 | 398 |
| Pinecrest Academy of Idaho Inc. | Twin Falls | K–8 | 392 |
| Murtaugh Joint District | Murtaugh | PK–12 | 388 |
| Kamiah Joint District | Kamiah | PK–12 | 380 |
| Victory Charter School Inc. | Nampa | PK–12 | 380 |
| Gem Prep: Online Llc | Meridian | PK–12 | 378 |
| Butte County Joint District | Arco | PK–12 | 376 |
| Future Public School Inc. | Garden City | K–6 | 376 |
| Taylor's Crossing Public Charter School Inc. | Idaho Falls | PK–12 | 375 |
| Hagerman Joint District | Hagerman | PK–12 | 374 |
| Thomas Jefferson Charter School Inc. | Caldwell | K–12 | 364 |
| Glenns Ferry Joint District | Glenns Ferry | PK–12 | 361 |
| The Kootenai Bridge Academy Inc. | Coeur D'alene | 9–12 | 347 |
| Idaho Novus Classical Academy Llc | Boise | K–6 | 338 |
| Troy School District | Troy | PK–12 | 336 |
| Notus District | Caldwell | PK–12 | 335 |
| Elevate Academy East Idaho Llc | Idaho Falls | 6–10 | 333 |
| Plummer-Worley Joint District | Plummer | PK–12 | 333 |
| Challis Joint District | Challis | PK–12 | 332 |
| Doral Academy of Idaho Inc. | Meridian | K–8 | 331 |
| The Pocatello Community Charter School Inc. | Pocatello | PK–8 | 328 |
| Idaho Virtual Education Partners Inc. | Boise | 6–12 | 320 |
| Gem Prep: Twin Falls Llc | Twin Falls | K–8 | 316 |
| Pathways in Education - Nampa Inc. | Nampa | 9–12 | 312 |
| Legacy Public Charter School Inc. | Nampa | K–8 | 311 |
| Hansen District | Hansen | PK–12 | 306 |
| Elevate Academy North Llc | Post Falls | 6–12 | 304 |
| Idaho Science and Technology Charter School Inc. | Blackfoot | K–9 | 301 |
| Basin School District | Idaho City | PK–12 | 299 |
| Genesee Joint District | Genesee | PK–12 | 288 |
| Council District | Council | PK–12 | 282 |
| Falcon Ridge Public Charter School Inc. | Kuna | PK–8 | 275 |
| Castleford District | Castleford | PK–12 | 274 |
| Kendrick Joint District | Kendrick | PK–12 | 267 |
| Bruneau-Grand View Joint School District | Bruneau | PK–12 | 263 |
| Sandpoint Charter School Inc. | Sandpoint | 6–12 | 255 |
| Project Impact Stem Academy Inc. | Meridian | K–12 | 227 |
| Garden Valley District | Garden Valley | PK–12 | 221 |
| Mackay Joint District | Mackay | PK–12 | 218 |
| Cascade District | Cascade | PK–12 | 215 |
| Kootenai District | Harrison | PK–12 | 213 |
| Richfield District | Richfield | PK–12 | 208 |
| Whitepine Joint School District | Deary | PK–12 | 205 |
| North Valley Academy Inc. | Gooding | K–12 | 197 |
| Peace Valley Charter School Inc. | Boise | K–8 | 192 |
| Palouse Prairie Educational Organization Inc. | Moscow | K–8 | 185 |
| Monticello Montessori Charter School Inc. | Ammon | PK–8 | 185 |
| Rolling Hills Public Charter School Inc. | Boise | K–8 | 176 |
| Heritage Academy Inc. | Jerome | PK–8 | 176 |
| Nezperce Joint District | Nezperce | PK–12 | 174 |
| Dietrich District | Dietrich | PK–12 | 173 |
| Salmon River Joint School District | Riggins | PK–12 | 173 |
| Horseshoe Bend School District | Horseshoe Bend | PK–12 | 170 |
| Highland Joint District | Craigmont | PK–12 | 168 |
| Rockland District | Rockland | PK–12 | 167 |
| Cambridge Joint District | Cambridge | PK–12 | 156 |
| North Gem District | Bancroft | PK–12 | 150 |
| Camas County District | Fairfield | PK–12 | 150 |
| Midvale District | Midvale | PK–12 | 150 |
| Pinecrest Academy of Lewiston Inc | Lewiston | K–6 | 149 |
| Meadows Valley District | New Meadows | PK–12 | 142 |
| Fern-Waters Public Charter School Inc. | Salmon | K–8 | 141 |
| Idaho College and Career Readiness Academy Inc. | Meridian | 9–12 | 137 |
| Syringa Mountain School Inc. | Hailey | K–8 | 128 |
| Shoshone-Bannock School | Pocatello | 6–12 | 127 |
| Coeur D' Alene Tribal School | Desmet | K–8 | 126 |
| Idaho Bureau of Educational Services for the Deaf and the Bl | Gooding | PK–12 | 111 |
| South Lemhi District | Leadore | PK–12 | 110 |
| Bliss Joint District | Bliss | PK–12 | 110 |
| Chief Tahgee Elementary Academy Inc. | Fort Hall | K–7 | 109 |
| Culdesac Joint District | Culdesac | PK–12 | 100 |
| Mullan District | Mullan | PK–12 | 95 |
| Clark County District | Dubois | PK–12 | 91 |
| Pathways in Education - West Ada | Meridian | 9–12 | 79 |
| Canyon-Owyhee School Service Agency (cossa) | Wilder | 7–12 | 79 |
| Idaho Stem Academy Inc. | Blackfoot | 9–12 | 68 |
| Mccall Community School Inc | Donnelly | K–8 | 68 |
| Swan Valley Elementary District | Irwin | PK–8 | 55 |
| Cardinal Academy Incorporated | Boise | 9–12 | 53 |
| Ktec - Kootenai Tech Ed Campus | Rathdrum | 9–12 | 37 |
| Island Park Charter School Inc. | Island Park | K–5 | 28 |
| Promise Academy Inc | Caldwell | 6–12 | 21 |
| Arbon Elementary District | Arbon | K–6 | 18 |
| Avery School District | Calder | K–8 | 8 |
| Prairie Elementary District | Prairie | K–8 | 6 |
| Three Creek Joint Elementary District | Rogerson | PK–8 | 5 |
| Idaho Digital Learning Academy | Boise | K–12 | — |
| The Village Charter School Inc. | Meridian | — | — |
| Upper Carmen Public Charter School Inc. | Carmen | — | — |
| Hollister Charter School Inc | Hollister | — | — |
| Idaho Department of Corrections | Boise | 9–12 | — |
| North Idaho Classical Academy Llc | Bonners Ferry | — | — |
| Idaho Department of Juvenile Corrections | Boise | 6–12 | — |
| Dry Creek Charter Inc. | Boise | — | — |