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O Fallon Twp HSD 203
Key statistics
2,540
Students enrolled
1
Public schools
156
Classroom teachers (FTE)
16.3:1
Students per teacher
Data source: National Center for Education Statistics, Common Core of Data. School year: 2024-25.
District details
Grades served
09 to 12
Total staff (FTE)
444
District office
600 S Smiley St, O Fallon IL 62269
Phone
County
St. Clair County
Official website
NCES District ID
1729790
About O Fallon Twp HSD 203
Description provided by the district or community — not part of the NCES dataset.
The mission of O'Fallon Township High School is to access the talents of community, family, and staff to provide a positive environment that maximizes the potential of students to become informed decision makers, engaged 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. District #203 has a student body of 2,500 students and a faculty and staff consisting of over 200 employees.