Los Osos High School - Class of 2004 Alumni, Ontario CA
Join thousands of alumni from Los Osos High School and the Class of 2004. Reconnect with classmates, photos, yearbooks, upcoming reunions.
Varsity Football Schedule 2026-27
08/19 vs JW North
08/26 vs Citrus Valley
09/02 vs Charter Oak
09/09 vs South Hills
09/17 vs Sultana
10/01 vs Chino
10/08 vs Alta Loma
10/15 vs Claremont
10/22 vs Diamond Ranch
10/29 vs San Dimas
08/26 vs Citrus Valley
09/02 vs Charter Oak
09/09 vs South Hills
09/17 vs Sultana
10/01 vs Chino
10/08 vs Alta Loma
10/15 vs Claremont
10/22 vs Diamond Ranch
10/29 vs San Dimas
Upcoming Class of 2004 Reunions
Browse past reunion events and photos for your class here.Past Class of 2004 Reunions
Browse past reunion events and photos for your class here.Class Yearbook
View past yearbooks
Connect with Class of 2004 Classmates
Nearby Los Osos Classmates
Class of 2003
2 classmates have joined
Class of 2005
20 classmates have joined
Class of 2006
10 classmates have joined