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| Fact | O Fallon High School Remove |
|---|---|
| School district | O Fallon Twp HSD 203 |
| Location | O Fallon, Illinois |
| School level | High |
| Grades | 09–12 |
| Students enrolled | 2,540 |
| Classroom teachers (FTE) | 156 |
| Students per teacher | 16.3:1 |
| School type | Regular |
| Charter school | No |
| Virtual (online) school | No |
| Title I status | Title I schoolwide school (2021-22) |
| Phone | (618) 632-3507 |
| Address | 600 S Smiley St, O Fallon IL 62269 |
| NCES data year | 2024-25 |
Source: National Center for Education Statistics (NCES) Common Core of Data. Facts as reported; schools are not ranked or rated.
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