- Jac-Cen-Del Community Sch Corp
- Jay School Corporation
- Jennings County School Corporation
- John Glenn School Corporation
- Kankakee Valley School Corp
- Knox Community School Corp
- Kokomo School Corporation
- Lafayette School Corporation
- Lake Central School Corporation
- Lake Ridge New Tech Schools
- Lake Station Community Schools
- Lakeland School Corporation
- Lanesville Community School Corp
- LaPorte Community School Corp
- Lawrenceburg Community School Corp
- Lebanon Community School Corp
- Liberty-Perry Community Sch Corp
- Linton-Stockton School Corporation
- Logansport Community Sch Corp
- Loogootee Community Sch Corp