O Fallon High School is a public high school in O Fallon, St. Clair County, Illinois. The campus is operated by O Fallon Twp HSD 203. Serving students in 9-12, the school enrolls approximately 2,540 students with 155.5 full-time equivalent teachers, maintaining a student-teacher ratio of 16.3:1 according to federal National Center for Education Statistics (NCES) records for the 2024-2025 school year.
School Information
NCES 2024-2025
Grades Offered
9-12
School Level
High School
School Type
Regular School
Locale Setting
Suburb: Large
Charter School
No
Operational Status
Open
NCES School ID
172979003090
State Identifier
IL-50-082-2030-17-500822030170001
County FIPS
17163
Physical Location Address
600 S Smiley St
O Fallon, IL 62269-2316
O Fallon, IL 62269-2316
School District
Parent District
O Fallon Twp HSD 203
Operating Schools
1 schools
District Type
Regular Public School District
Central Office
O Fallon, IL
Location Map
38.5868, -89.9015
Google Maps ›
Nearby Public Schools
Laverna Evans Elem School
0.6 mi
Elementary • O Fallon
Marie Schaefer Elem School
0.7 mi
Elementary • O Fallon
Estelle Kampmeyer Elem School
0.8 mi
Elementary • O Fallon
Amelia V Carriel Jr High
1.3 mi
Middle • O Fallon
J Emmett Hinchcliffe Sr Elem Sch
1.4 mi
Elementary • O Fallon