O'fallon High School - Class of 1990 Alumni
Join thousands of alumni from O'fallon High School and the Class of 1990. 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 1990 Reunions
Browse past reunion events and photos for your class here.Past Class of 1990 Reunions
Browse past reunion events and photos for your class here.Class Yearbook
View past yearbooks
Recently joined '90 Classmates
Cathy Baker
Class of 1990
Connect with Class of 1990 Classmates
Nearby O'fallon Classmates
Class of 1988
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Class of 1989
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Class of 1991
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Class of 1992
9 classmates have joined