O'Fallon Township High School
| O'Fallon Township High School | |
|---|---|
| Address | |
600 South Smiley Street , 62269 United States | |
| Coordinates | 38°35′12″N 89°54′06″W / 38.5867160°N 89.9017677°W |
| Information | |
| School type | Public |
| Motto | "Excellence in Education for Every student Every day" |
| Founded | 1901 |
| School district | 203 |
| Superintendent | Beth Shackelford |
| Principal | Rich Bickel |
| Staff | 155.00 (FTE) |
| Grades | 9-12 |
| Enrollment | 2,559 (2023–2024) |
| Student to teacher ratio | 16.51 |
| Color(s) | Blue Gold |
| Athletics conference | Southwestern Conference |
| Mascot | Panther |
| Publication | Panther Beat |
| Newspaper | The Prowler |
| Yearbook | The Panther |
| Website | www.oths.us |
O'Fallon Township High School is a public secondary school in O'Fallon, Illinois.
As of 2023, it is the second largest public high school in Illinois by enrollment outside of the Chicago area (Belleville High School-East being the largest).