O'fallon High School - Class of 2021 Alumni
Join thousands of alumni from O'fallon High School and the Class of 2021. Reconnect with classmates, photos, yearbooks, upcoming reunions.
Varsity Football Schedule 2026-27
08/21 vs Quincy
08/27 vs Francis Howell
09/03 vs Troy‑Buchanan
09/10 vs East St. Louis
09/17 vs Belleville West
09/24 vs Triad
10/01 vs Edwardsville
10/08 vs Belleville East
10/15 vs Alton
08/27 vs Francis Howell
09/03 vs Troy‑Buchanan
09/10 vs East St. Louis
09/17 vs Belleville West
09/24 vs Triad
10/01 vs Edwardsville
10/08 vs Belleville East
10/15 vs Alton
Upcoming Class of 2021 Reunions
Browse past reunion events and photos for your class here.Past Class of 2021 Reunions
Browse past reunion events and photos for your class here.Class Yearbook
View past yearbooks
Connect with Class of 2021 Classmates
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Class of 2020
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Class of 2022
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