"Excellence in Education for Every student Every day"

The mission of O'Fallon Township High School is to access the talents of the community, family, and staff to provide a positive environment that maximizes the potential of students to become informed decision makers, engaged life-long learners, and responsible citizens in an ever-changing and diverse society.

Serving students in an area of fifty square miles in St. Clair County, OTHS has been recognized by the United States Department of Education as one of the finest high schools in the country. With an operating budget of approximately $30 million, District #203 serves a student body of 2,500 students and a faculty and staff of over 300 full-time employees.

District #203 has the following building locations: