La Moille High School | Lake Forest Academy | Lake Forest High School | Lake View High School | Lakes Community High School |
Lions | Caxys | Scouts | Wildcats | Eagles |
Lane Tech High School | Larkin High School | LaSalle-Peru Township High School | Latin School of Chicago | Lawrenceville High School |
Champions | Royals | Cavaliers | Romans | Indians |
Le Roy High School | Lebanon High School | Legal Prep Charter Academy | Leland High School | Lemont High School |
Panthers | Greyhounds | Wildcats | Panthers |
Lena-Winslow High School | Lewistown High School | Lexington High School | Leyden Community High School | Liberty High School |
Panthers | Indians | Minutemen | Eagles | Eagles |
Libertyville High School | Limestone High School | Lincoln High School | Lincoln Park High School | Lincoln-Way Central High School |
Wildcats | Rockets | Railsplitters | Lions | Knights |
Lincoln-Way East High School | Lincoln-Way West High School | Lincolnwood High School | Lindblom Math and Science Academy | Lisle High School |
Griffins | Warriors | Lancers | Eagles | Lions |
Little Village High School | Lockport Township High School | Lowpoint-Washburn High School | Loyola Academy | Lyons Township High School |
Phoenix | Porters | Wildcats | Ramblers | Lions |
Macomb High School | Madison High School | Mahomet-Seymour High School | Maine East High School | Maine South High School |
Bombers | Trojans | Bulldogs | Blue Demons | Hawks |
Manley Career Academy High School | Mansueto High School | Manteno High School | Manual Academy | Marengo Community High School |
Wildcats | Leopards | Panthers | Rams | Indians |
Marian Catholic High School | Marine Leadership Academy | Marion High School | Marissa High School | Marist High School Chicago |
Spartans | Bulldogs | Wildcats | Meteors | RedHawks |
Marmion Academy | Maroa-Forsyth High School | Marquette Academy | Marquette Manor Baptist Academy | Marshall High School |
Cadets | Trojans | Crusaders | Minutemen | Lions |
Marshall Metropolitan High School | Martinsville High School | Maryville Christian School | Mascoutah High School | Massac County High School |
Commandos | Bluestreaks | Lions | Indians | Patriots |
Mater Dei Catholic High School | Mather High School | Mattoon High School | MCC Academy | McHenry High School |
Knights | Rangers | Green Wave | Crescents | Warriors |
Mendota High School | Mercer County High School | Meredosia/Chambersburg High School | Meridian High School | Metamora Township High School |
Trojans | Golden Eagles | Indians | Hawks | Redbirds |
Metea Valley High School | Michele Clark Academy Preparatory High School | Mid-America Preparatory School | Midland High School | Midwest Central High School |
Mustangs | Eagles | Timberwolves | Raiders |
Milford High School | Milledgeville High School | Minooka Community High School | Moline High School | Monmouth-Roseville High School |
Bearcats | Missiles | Indians | Maroons | Titans |
Monticello High School | Montini Catholic High School | Mooseheart High School | Morgan Park Academy | Morgan Park High School |
Sages | Broncos | Red Ramblers | Warriors | Mustangs |
Morris Community High School | Morrison High School | Morrisonville High School | Morton High School | Mother McAuley Liberal Arts High School |
Redskins | Mustangs | Mohawks | Potters | Mighty Macs |
Mounds Meridian High School | Mt. Carmel High School | Mt. Carmel High School | Mt. Pulaski High School | Mt. Vernon Township High School |
Bobcats | Caravan | Golden Aces | Hilltoppers | Rams |
Muchin College Prep | Mulberry Grove High School | Mundelein High School | Murphysboro High School | |
Mountain Lions | Aces | Mustangs | Red Devils |