| School | District | County |
|---|---|---|
| Kipling | Deerfield | Lake |
| Kipp Ascend Charter | Cook | |
| Kipp Chicago Youth Vill Elem Acad | City Of Chicago | Cook |
| Kirby | Kirby | Cook |
| Kishwaukee | Belvidere C U | Boone |
| Kishwaukee | Rockford | Winnebago |
| Knoxville Jr High | Knoxville C U | Knox |
| Kohn | City Of Chicago | Cook |
| Kolmar | Midlothian | Cook |
| Kolmar Avenue | Oak Lawn-Hometown | Cook |
| Komarek | Komarek | Cook |
| Komensky | Berwyn South | Cook |
| Kozminski Elem Community Academy | City Of Chicago | Cook |
| Kreitner | Collinsville C U | Madison |
| L D Brady | Aurora East Unit | Kane |
| L E Starke | Pekin Public | Tazewell |
| Lace | Darien | Dupage |
| Lacon | Midland Community Unit Dist 7 | Marshall |
| Ladd Comm Cons | Ladd Comm Cons | Bureau |
| Lafayette | City Of Chicago | Cook |
| Lafayette | Kankakee | Kankakee |
| Laharpe | Laharpe Comm Unit | Hancock |
| Laharpe Junior High | Laharpe Comm Unit | Hancock |
| Lake | Granite City C U | Madison |
| Lake Crest | Oakland C U | Coles |
| Lake In The Hills | Comm Unit | Kane |
| Lake Louise | Palatine C C | Cook |
| Lake Park | Addison | Dupage |
| Laketown | Springfield | Sangamon |
| Lakeview | Schaumburg C C | Cook |
| Lakeview | Comm Consolidated Sch | Lake |
| Lakewood | Comm Unit | Kane |
| Lakewood Creek Trans | Oswego Comm Unit | Kendall |
| Lakewood Falls | Plainfield | Will |
| Lalumier | Cahokia Comm Unit | St. Clair |
| Landmark | McHenry C C | McHenry |
| Lane | Alsip-Hazlgrn-Oaklwn S Dist 126 | Cook |
| Langston Hughes | City Of Chicago | Cook |
| Lara Elem Academy | City Of Chicago | Cook |
| Laraway | Laraway C C School Dist 70C | Will |
| Lasalle | Creve Coeur | Tazewell |
| Lasalle Elem Language Academy | City Of Chicago | Cook |
| Lathrop | City Of Chicago | Cook |
| Laura Ward | City Of Chicago | Cook |
| Laurel Hill | School | Kane |
| Laverna Evans | O Fallon C C | St. Clair |
| Lavizzo | City Of Chicago | Cook |
| Lawndale Elem Community Academy | City Of Chicago | Cook |
| Lawrence | City Of Chicago | Cook |
| Leaf River Grade | Forrestville Valley C U S D 221 | Ogle |