9-12
High
O Fallon High School
600 S Smiley St, O Fallon, IL 62269 · Serves ninth grade through twelfth grade.
Supply lists by grade
These are the default lists for 2026-27. If your teacher has published their own, you'll see it on the grade page.
Teach at O Fallon High School?
Claim your classroom and post your supply list, so parents shop once instead of guessing which version is current.