O Fallon CCSD 90

Headquartered at 118 E Washington Street in O’Fallon, Illinois, O’Fallon Community Consolidated School District 90 serves as a vital educational anchor within the suburban ring of the greater St. Louis metropolitan area. Operating as an active, traditional public school district, District 90 manages seven operational schools tailored specifically to early childhood, elementary, and middle school learning environments. Serving students from pre-kindergarten through eighth grade, the district focuses on establishing strong academic and developmental foundations, preparing young learners across the community for their eventual transition into high school.

To support its vibrant population of 3,862 students, O’Fallon CCSD 90 maintains a comprehensive professional infrastructure designed to foster academic achievement and student well-being. The district’s workforce includes 448 full-time equivalent teachers, working alongside 136 instructional aides and 580 support personnel to form a total staff of 1,165 full-time equivalent positions. This strong staffing footprint ensures that students across all grade levels benefit from dedicated classroom instruction, robust administrative and operational backing, and targeted learning supports suited to a thriving suburban public school system.