| Des Moines Independent Community School District | 30,278 | Aug 24 | Jun 3 | Estimated |
| Cedar Rapids Comm School District | 15,289 | Aug 24 | May 25 | Estimated |
| Iowa City Comm School District | 14,701 | Aug 24 | Jun 4 | Estimated |
| Davenport Comm School District | 13,744 | Aug 24 | May 25 | Estimated |
| Waukee Community School District | 13,082 | Aug 24 | May 25 | Estimated |
| Ankeny Community School District | 12,750 | Aug 24 | May 28 | Estimated |
| Waterloo Comm School District | 10,527 | Aug 24 | May 25 | Estimated |
| West Des Moines Comm School District | 9,120 | Aug 24 | May 25 | Estimated |
| Council Bluffs Comm School District | 8,733 | Aug 24 | May 27 | Estimated |
| Linn-Mar Comm School District | 7,611 | Aug 24 | Jun 2 | Estimated |
| Johnston Comm School District | 7,431 | Aug 24 | May 25 | Estimated |
| Southeast Polk Comm School District | 7,397 | Aug 24 | May 25 | Estimated |
| Cedar Falls Comm School District | 5,884 | Aug 24 | May 25 | Estimated |
| College Comm School District | 5,709 | Aug 24 | Jun 8 | Estimated |
| Pleasant Valley Comm School District | 5,651 | Aug 24 | Jun 4 | Estimated |
| Marshalltown Comm School District | 5,078 | Aug 24 | May 28 | Estimated |
| Ottumwa Comm School District | 4,959 | Aug 24 | May 25 | Estimated |
| Ames Comm School District | 4,645 | Aug 24 | May 25 | Estimated |
| Muscatine Comm School District | 4,580 | Aug 24 | May 25 | Estimated |
| Bettendorf Comm School District | 4,432 | Aug 24 | May 25 | Estimated |
| Urbandale Comm School District | 4,258 | Aug 3 | May 21 | Estimated |
| Dallas Center-Grimes Comm School District | 3,747 | Aug 24 | May 28 | Estimated |
| Indianola Comm School District | 3,665 | Aug 24 | May 25 | Estimated |
| Western Dubuque Comm School District | 3,629 | Aug 24 | May 25 | Estimated |
| Fort Dodge Comm School District | 3,527 | Aug 24 | May 25 | Estimated |
| Mason City Comm School District | 3,526 | Aug 24 | May 25 | Estimated |
| Norwalk Comm School District | 3,508 | Aug 24 | May 25 | Estimated |
| North Scott Comm School District | 3,389 | Aug 24 | May 25 | Estimated |
| Burlington Comm School District | 3,334 | Aug 26 | Jun 9 | Estimated |
| Clinton Comm School District | 3,286 | Aug 24 | May 25 | Estimated |
| Lewis Central Comm School District | 3,022 | Aug 24 | May 25 | Estimated |
| Newton Comm School District | 2,809 | Sep 4 | Jun 25 | Estimated |
| Storm Lake Comm School District | 2,794 | Aug 31 | Jun 11 | Estimated |
| Bondurant-Farrar Comm School District | 2,731 | Aug 24 | May 25 | Estimated |
| Pella Comm School District | 2,491 | Aug 3 | May 21 | Estimated |
| Carlisle Comm School District | 2,369 | Aug 24 | May 25 | Estimated |
| Waverly-Shell Rock Comm School District | 2,304 | Aug 24 | May 25 | Estimated |
| Le Mars Comm School District | 2,268 | Aug 24 | Jun 21 | Estimated |
| Denison Comm School District | 2,245 | Aug 24 | May 25 | Estimated |
| Spencer Comm School District | 2,230 | Aug 3 | May 21 | Estimated |
| Marion Independent School District | 2,229 | Aug 3 | Jun 14 | Estimated |
| North Polk Comm School District | 2,224 | Aug 24 | May 25 | Estimated |
| Oskaloosa Comm School District | 2,130 | Aug 24 | May 25 | Estimated |
| Glenwood Comm School District | 2,071 | Aug 20 | Jun 3 | Estimated |
| Boone Comm School District | 1,983 | Aug 24 | May 25 | Estimated |
| Ballard Comm School District | 1,960 | Aug 27 | Jun 9 | Estimated |
| Perry Comm School District | 1,858 | Aug 24 | May 25 | Estimated |
| Mount Pleasant Comm School District | 1,795 | Aug 24 | May 25 | Estimated |
| Fort Madison Comm School District | 1,792 | Aug 24 | May 25 | Estimated |
| Keokuk Comm School District | 1,782 | Aug 12 | Jun 3 | Estimated |
| Clayton Ridge Comm School District | 1,773 | Aug 24 | May 25 | Estimated |
| Sergeant Bluff-Luton Comm School District | 1,769 | Aug 24 | May 25 | Estimated |
| Carroll Comm School District | 1,758 | Aug 24 | May 25 | Estimated |
| Webster City Comm School District | 1,731 | Aug 24 | May 25 | Estimated |
| CAM Comm School District | 1,711 | Aug 24 | Jun 8 | Estimated |
| Gilbert Comm School District | 1,698 | Aug 3 | May 28 | Estimated |
| Knoxville Comm School District | 1,659 | Aug 10 | May 26 | Estimated |
| Atlantic Comm School District | 1,642 | Aug 24 | Jun 8 | Estimated |
| Benton Comm School District | 1,640 | Aug 3 | May 21 | Estimated |
| Washington Comm School District | 1,621 | Aug 24 | May 25 | Estimated |
| Algona Comm School District | 1,597 | Sep 9 | Jun 29 | Estimated |
| Decorah Community School District | 1,589 | Aug 24 | May 25 | Estimated |
| Nevada Comm School District | 1,570 | Aug 24 | May 25 | Estimated |
| Central DeWitt School District | 1,565 | Aug 12 | Jun 3 | Estimated |
| Vinton-Shellsburg Comm School District | 1,551 | Aug 24 | May 25 | Estimated |
| Solon Comm School District | 1,522 | Aug 24 | May 25 | Estimated |
| Charles City Comm School District | 1,516 | Aug 24 | Jun 8 | Estimated |
| Harlan Comm School District | 1,505 | Aug 24 | May 25 | Estimated |
| South Tama County | 1,488 | Aug 4 | May 25 | Estimated |
| Humboldt Comm School District | 1,481 | Aug 24 | May 25 | Estimated |
| Independence Comm School District | 1,480 | Aug 24 | May 25 | Estimated |
| Clear Lake Comm School District | 1,472 | Aug 24 | May 25 | Estimated |
| Fairfield Comm School District | 1,466 | Aug 24 | May 25 | Estimated |
| Center Point-Urbana Comm School District | 1,466 | Aug 12 | Jun 3 | Estimated |
| Mount Vernon Comm School District | 1,427 | Aug 6 | May 25 | Estimated |
| Creston Comm School District | 1,426 | Aug 12 | Jun 3 | Estimated |
| Mid-Prairie Comm School District | 1,418 | Aug 24 | Jun 8 | Estimated |
| Saydel Comm School District | 1,376 | Aug 24 | May 25 | Estimated |
| Oelwein Comm School District | 1,349 | Aug 24 | May 25 | Estimated |
| Spirit Lake Comm School District | 1,328 | Aug 24 | May 25 | Estimated |
| Centerville Comm School District | 1,325 | Aug 24 | May 25 | Estimated |
| Clarke Comm School District | 1,324 | Aug 10 | May 20 | Estimated |
| Maquoketa Comm School District | 1,318 | Aug 24 | May 25 | Estimated |
| Chariton Comm School District | 1,298 | Aug 24 | May 25 | Estimated |
| West Liberty Comm School District | 1,284 | Aug 24 | May 25 | Estimated |
| Iowa Falls Comm School District | 1,279 | Aug 24 | May 25 | Estimated |
| Central Lee Comm School District | 1,270 | Aug 4 | May 25 | Estimated |
| Hampton-Dumont Comm School District | 1,263 | Aug 5 | May 26 | Estimated |
| Greene County Comm School District | 1,259 | Aug 24 | May 25 | Estimated |
| Cherokee Comm School District | 1,217 | Aug 3 | May 25 | Estimated |
| Williamsburg Comm School District | 1,216 | Aug 10 | May 27 | Estimated |
| Okoboji Comm School District | 1,213 | Aug 24 | May 25 | Estimated |
| Davis County Comm School District | 1,208 | Aug 24 | May 25 | Estimated |
| Estherville Lincoln Central Com Sch Dist | 1,189 | Aug 24 | May 25 | Estimated |
| Allamakee Comm School District | 1,185 | Aug 24 | May 25 | Estimated |
| Shenandoah Comm School District | 1,142 | Aug 24 | May 25 | Estimated |
| Forest City Comm School District | 1,141 | Aug 24 | May 25 | Estimated |
| Albia Comm School District | 1,123 | Aug 11 | May 27 | Estimated |
| Roland-Story Comm School District | 1,108 | Aug 12 | May 27 | Estimated |
| Cardinal Comm School District | 1,107 | Aug 24 | May 25 | Estimated |
| Southeast Webster Grand Comm School District | 1,100 | Aug 25 | May 28 | Estimated |
| Van Meter Comm School District | 1,090 | Aug 24 | Jun 8 | Estimated |
| PCM Comm School District | 1,088 | Aug 11 | May 27 | Estimated |
| New Hampton Comm School District | 1,088 | Aug 24 | May 25 | Estimated |
| North Fayette Valley Comm School District | 1,058 | Aug 24 | May 25 | Estimated |
| Howard-Winneshiek Comm School District | 1,058 | Aug 13 | Jun 4 | Estimated |
| Clarinda Comm School District | 1,043 | Aug 24 | May 25 | Estimated |
| Monticello Comm School District | 1,043 | Aug 24 | May 25 | Estimated |
| Eagle Grove Comm School District | 1,042 | Aug 11 | May 27 | Estimated |
| Red Oak Comm School District | 1,013 | Aug 24 | May 25 | Estimated |
| Osage Comm School District | 996 | Aug 24 | May 25 | Estimated |
| Union Comm School District | 985 | Aug 24 | May 25 | Estimated |
| Denver Comm School District | 979 | Aug 24 | May 25 | Estimated |
| West Lyon Comm School District | 972 | Aug 24 | May 25 | Estimated |
| Mediapolis Comm School District | 972 | Aug 24 | May 25 | Estimated |
| Wilton Comm School District | 965 | Aug 24 | May 25 | Estimated |
| Tipton Comm School District | 941 | Aug 24 | May 25 | Estimated |
| West Marshall Comm School District | 936 | Aug 10 | May 27 | Estimated |
| South Central Calhoun Comm School District | 916 | Aug 24 | May 25 | Estimated |
| West Burlington Ind School District | 900 | Aug 24 | May 25 | Estimated |
| Hudson Comm School District | 894 | Aug 24 | May 25 | Estimated |
| MFL MarMac Comm School District | 891 | Aug 24 | May 25 | Estimated |
| Northeast Comm School District | 869 | Aug 24 | May 25 | Estimated |
| Van Buren Comm School District | 867 | Aug 24 | May 25 | Estimated |
| West Branch Comm School District | 864 | Aug 10 | May 27 | Estimated |
| Underwood Comm School District | 862 | Aug 3 | May 21 | Estimated |
| Aplington-Parkersburg Comm School District | 852 | Aug 10 | May 27 | Estimated |
| West Central Valley Comm School District | 852 | Aug 24 | May 25 | Estimated |
| Hinton Comm School District | 842 | Aug 24 | May 25 | Estimated |
| East Sac County Comm School District | 831 | Aug 4 | May 25 | Estimated |
| Pleasantville Comm School District | 827 | Aug 3 | May 21 | Estimated |
| Interstate 35 Comm School District | 825 | Aug 24 | May 25 | Estimated |
| Alburnett Comm School District | 825 | Aug 3 | May 21 | Estimated |
| Alta-Aurelia Comm School District | 822 | Aug 18 | Jun 2 | Estimated |
| Treynor Comm School District | 816 | Aug 24 | May 25 | Estimated |
| Louisa-Muscatine Comm School District | 810 | Aug 24 | May 25 | Estimated |
| Sumner-Fredericksburg Comm School District | 804 | Aug 24 | May 25 | Estimated |
| Bellevue Comm School District | 804 | Aug 24 | May 25 | Estimated |
| Grundy Center Comm School District | 796 | Aug 24 | May 25 | Estimated |
| Central Lyon Comm School District | 796 | Aug 24 | May 25 | Estimated |
| Manson Northwest Webster Comm School District | 793 | Aug 25 | May 28 | Estimated |
| Central Springs Comm School District | 777 | Aug 24 | May 25 | Estimated |
| AHSTW Comm School District | 776 | Sep 1 | Jun 4 | Estimated |
| Emmetsburg Comm School District | 771 | Aug 24 | May 25 | Estimated |
| Ogden Comm School District | 771 | Aug 24 | May 25 | Estimated |
| West Fork Comm School District | 760 | Aug 27 | May 27 | Estimated |
| Missouri Valley Comm School District | 745 | Aug 3 | May 21 | Estimated |
| Lawton-Bronson Comm School District | 745 | Aug 24 | May 25 | Estimated |
| Postville Comm School District | 739 | Aug 24 | May 25 | Estimated |
| West Sioux Comm School District | 738 | Aug 10 | May 27 | Estimated |
| Logan-Magnolia Comm School District | 728 | Aug 24 | May 25 | Estimated |
| Colfax-Mingo Comm School District | 724 | Aug 24 | May 25 | Estimated |
| Tri-Center Comm School District | 720 | Aug 3 | May 27 | Estimated |
| IKM-Manning Comm School District | 713 | Aug 24 | May 25 | Estimated |
| Sibley-Ocheyedan Comm School District | 699 | Aug 24 | May 25 | Estimated |
| Maquoketa Valley Comm School District | 698 | Aug 24 | May 25 | Estimated |
| Riverside Comm School District | 693 | Aug 6 | May 26 | Estimated |
| Panorama Comm School District | 691 | Aug 3 | May 21 | Estimated |
| Belmond-Klemme Comm School District | 689 | Aug 24 | May 27 | Estimated |
| Durant Comm School District | 689 | Aug 24 | May 25 | Estimated |
| Columbus Comm School District | 686 | Aug 20 | May 27 | Estimated |
| Wapsie Valley Comm School District | 680 | Aug 24 | May 25 | Estimated |
| East Marshall Comm School District | 672 | Aug 24 | May 25 | Estimated |
| South Hamilton Comm School District | 670 | Aug 24 | May 25 | Estimated |
| Lake Mills Comm School District | 670 | Aug 25 | May 26 | Estimated |
| Central Decatur Comm School District | 668 | Aug 24 | May 25 | Estimated |
| Danville Comm School District | 662 | Aug 6 | May 21 | Estimated |
| Earlham Comm School District | 660 | Aug 19 | Jun 9 | Estimated |
| Madrid Comm School District | 659 | Aug 24 | May 25 | Estimated |
| Sioux Central Comm School District | 656 | Aug 27 | May 26 | Estimated |
| Nodaway Valley Comm School District | 651 | Sep 3 | Jun 11 | Estimated |
| West Monona Comm School District | 645 | Aug 13 | Jun 4 | Estimated |
| AGWSR Comm School District | 643 | Aug 5 | May 27 | Estimated |
| Wayne Comm School District | 631 | Aug 3 | Jun 2 | Estimated |
| West Hancock Comm School District | 628 | Aug 24 | May 25 | Estimated |
| Boyden-Hull Comm School District | 627 | Aug 24 | May 25 | Estimated |
| Westwood Comm School District | 625 | Aug 13 | May 19 | Estimated |
| Pekin Comm School District | 623 | Aug 24 | May 25 | Estimated |
| Mount Ayr Comm School District | 621 | Aug 25 | Jun 16 | Estimated |
| St Ansgar Comm School District | 610 | Aug 24 | May 26 | Estimated |
| North Mahaska Comm School District | 600 | Sep 8 | Jun 25 | Estimated |
| New London Comm School District | 600 | Aug 24 | May 25 | Estimated |
| Akron Westfield Comm School District | 599 | Aug 18 | Jun 3 | Estimated |
| Nashua-Plainfield Comm School District | 593 | Aug 24 | May 25 | Estimated |
| Sigourney Comm School District | 593 | Aug 4 | May 25 | Estimated |
| North Cedar Comm School District | 591 | Aug 24 | May 25 | Estimated |
| Starmont Comm School District | 584 | Aug 24 | May 25 | Estimated |
| East Buchanan Comm School District | 581 | Aug 24 | May 25 | Estimated |
| Northwood-Kensett Comm School District | 575 | Aug 24 | May 25 | Estimated |
| Brooklyn-Guernsey-Malcom Comm School District | 569 | Aug 24 | May 27 | Estimated |
| Highland Comm School District | 559 | Aug 24 | May 25 | Estimated |
| South O'Brien Comm School District | 558 | Aug 11 | May 27 | Estimated |
| Newell-Fonda Comm School District | 556 | Sep 2 | Jun 11 | Estimated |
| Lynnville-Sully Comm School District | 550 | Aug 4 | May 25 | Estimated |
| Iowa Valley Comm School District | 548 | Aug 24 | Jun 8 | Estimated |
| Audubon Comm School District | 544 | Aug 24 | May 25 | Estimated |
| North Linn Comm School District | 541 | Aug 24 | Jun 2 | Estimated |
| Woodbine Comm School District | 534 | Aug 5 | May 31 | Estimated |
| North Butler Comm School District | 532 | Aug 24 | May 25 | Estimated |
| South Winneshiek Comm School District | 531 | Aug 4 | May 25 | Estimated |
| Bedford Comm School District | 523 | Aug 24 | May 25 | Estimated |
| Eldora-New Providence Comm School District | 522 | Aug 24 | May 25 | Estimated |
| Lenox Comm School District | 520 | Aug 24 | Jun 8 | Estimated |
| Galva-Holstein Comm School District | 519 | Aug 5 | May 27 | Estimated |
| Wapello Comm School District | 509 | Sep 8 | Jun 11 | Estimated |
| Midland Comm School District | 508 | Aug 24 | May 26 | Estimated |
| Waco Comm School District | 505 | Aug 24 | May 25 | Estimated |
| Easton Valley Comm School District | 499 | Aug 24 | May 25 | Estimated |
| Janesville Consolidated School District | 495 | Aug 24 | May 25 | Estimated |
| Edgewood-Colesburg Comm School District | 493 | Aug 24 | May 25 | Estimated |
| East Union Comm School District | 489 | Aug 24 | May 27 | Estimated |
| Fremont-Mills Comm School District | 487 | Aug 24 | May 25 | Estimated |
| Baxter Comm School District | 486 | Aug 24 | May 25 | Estimated |
| Springville Comm School District | 479 | Aug 3 | May 21 | Estimated |
| BCLUW Comm School District | 478 | Aug 24 | May 25 | Estimated |
| Sidney Comm School District | 476 | Aug 3 | May 21 | Estimated |
| Montezuma Comm School District | 472 | Aug 24 | May 25 | Estimated |
| GMG Comm School District | 472 | Aug 24 | May 25 | Estimated |
| North Iowa Comm School District | 465 | Aug 24 | May 25 | Estimated |
| Kingsley-Pierson Comm School District | 453 | Aug 24 | May 25 | Estimated |
| Guthrie Center Comm School District | 447 | Aug 3 | May 21 | Estimated |
| East Mills Comm School District | 443 | Aug 24 | May 25 | Estimated |
| Southeast Warren Comm School District | 438 | Aug 24 | May 25 | Estimated |
| Lone Tree Comm School District | 438 | Aug 17 | Jul 30 | Estimated |
| Griswold Comm School District | 436 | Aug 24 | May 25 | Estimated |
| Coon Rapids-Bayard Comm School District | 436 | Aug 24 | May 25 | Estimated |
| Boyer Valley Comm School District | 427 | Aug 24 | May 25 | Estimated |
| Calamus-Wheatland Comm School District | 423 | Aug 24 | May 25 | Estimated |
| English Valleys Comm School District | 421 | Aug 24 | May 25 | Estimated |
| Corning Comm School District | 420 | Aug 3 | May 21 | Estimated |
| Rudd-Rockford-Marble Rk Comm School District | 414 | Aug 24 | May 25 | Estimated |
| Dunkerton Comm School District | 414 | Aug 24 | May 25 | Estimated |
| Collins-Maxwell Comm School District | 412 | Aug 10 | May 27 | Estimated |
| Riceville Comm School District | 406 | Aug 24 | May 25 | Estimated |
| Winfield-Mt Union Comm School District | 398 | Sep 2 | Jun 11 | Estimated |
| Glidden-Ralston Comm School District | 393 | Aug 24 | May 25 | Estimated |
| Marcus-Meriden-Cleghorn Comm School District | 384 | Aug 26 | Jun 8 | Estimated |
| Colo-NESCO Comm School District | 383 | Aug 24 | May 25 | Estimated |
| Lamoni Comm School District | 380 | Aug 24 | May 25 | Estimated |
| Moravia Comm School District | 376 | Aug 24 | Jun 8 | Estimated |
| Turkey Valley Comm School District | 375 | Aug 24 | May 25 | Estimated |
| Harris-Lake Park Comm School District | 340 | Aug 7 | May 25 | Estimated |
| Twin Cedars Comm School District | 338 | Aug 24 | May 25 | Estimated |
| United Comm School District | 331 | Aug 24 | May 26 | Estimated |
| Melcher-Dallas Comm School District | 330 | Aug 24 | May 25 | Estimated |
| North Union Comm School District | 325 | Aug 24 | May 27 | Estimated |
| Keota Comm School District | 321 | Aug 24 | May 25 | Estimated |
| West Central Comm School District | 321 | Aug 13 | Jun 4 | Estimated |
| Murray Comm School District | 317 | Aug 6 | May 28 | Estimated |
| Schaller-Crestland Comm School District | 311 | Aug 24 | May 25 | Estimated |
| Clarksville Comm School District | 311 | Aug 24 | May 25 | Estimated |
| Remsen-Union Comm School District | 307 | Aug 18 | Jun 3 | Estimated |
| West Harrison Comm School District | 298 | Aug 10 | May 27 | Estimated |
| H-L-V Comm School District | 295 | Aug 7 | May 26 | Estimated |
| Eastern Allamakee Comm School District | 293 | Aug 24 | May 25 | Estimated |
| Villisca Comm School District | 279 | Aug 12 | Jun 7 | Estimated |
| Stanton Comm School District | 265 | Aug 24 | May 25 | Estimated |
| North Kossuth Comm School District | 258 | Aug 24 | May 25 | Estimated |
| Ar-We-Va Comm School District | 248 | Aug 24 | May 25 | Estimated |
| Mormon Trail Comm School District | 240 | Aug 3 | May 21 | Estimated |
| Seymour Comm School District | 223 | Aug 24 | May 25 | Estimated |
| Essex Comm School District | 206 | Aug 13 | May 21 | Estimated |
| Tri-County Comm School District | 192 | Aug 24 | May 25 | Estimated |
| Paton-Churdan Comm School District | 185 | Aug 24 | May 25 | Estimated |
| Charter Oak-Ute Comm School District | 185 | Aug 3 | May 27 | Estimated |
| CAL Comm School District | 181 | Aug 5 | May 31 | Estimated |
| Moulton-Udell Comm School District | 164 | Aug 10 | May 27 | Estimated |
| Delwood Comm School District | 161 | Aug 3 | May 21 | Estimated |
| Alden Comm School District | 159 | Aug 12 | Jun 3 | Estimated |
| Ruthven-Ayrshire Comm School District | 158 | Sep 2 | Jun 11 | Estimated |
| Orient-Macksburg Comm School District | 150 | Aug 24 | May 25 | Estimated |
| Andrew Comm School District | 147 | Aug 24 | May 25 | Estimated |
| Morning Sun Comm School District | 127 | | | Confirmed |
| Schleswig Comm School District | 123 | Sep 7 | Jun 16 | Estimated |
| Gilmore City-Bradgate Comm School District | 109 | Aug 24 | May 25 | Estimated |
| Diagonal Comm School District | 107 | Aug 11 | May 21 | Estimated |
| Bennett Comm School District | 72 | Aug 11 | May 21 | Estimated |
| Twin Rivers Comm School District | 47 | Aug 18 | Jun 4 | Estimated |
| LuVerne Comm School District | 35 | | | Confirmed |
| North Winneshiek Comm School District | 0 | Aug 6 | May 26 | Estimated |
| Northeast Hamilton Comm School District | 0 | | | Estimated |
| Harmony Comm School District | 0 | | | Estimated |