St. Clair County
- Apostolic Learning Academy (K-12), Dupo
- Althoff Catholic High School, Belleville
- Belleville High School-East, Belleville
- Belleville High School-West, Belleville
- Cahokia High School, Cahokia
- Collinsville High School, Collinsville
- Dupo High School, Dupo
- East St. Louis Senior High School, East St. Louis
- Freeburg Community High School, Freeburg
- Lebanon High School, Lebanon
- Marissa Junior-Senior High School, Marissa
- Mascoutah Community High School, Mascoutah
- New Athens High School, New Athens
- O'Fallon Township High School, O'Fallon
- SIU Charter School of East St. Louis, East St. Louis
Read more about this topic: List Of High Schools In Illinois
Famous quotes containing the word county:
“In the County Tyrone, in the town of Dungannon,”
—Unknown. The Old Orange Flute (l. 1)