Plains High School - Class of 1991 Alumni

Join thousands of alumni from Plains High School and the Class of 1991. Reconnect with classmates, photos, yearbooks, upcoming reunions.

Varsity Football Schedule 2026-27

09/03 vs St. Ignatius
09/11 vs Charlo
09/17 vs Seeley‑Swan
09/18 vs Seeley‑Swan
09/25 vs Victor

Upcoming Class of 1991 Reunions

Browse past reunion events and photos for your class here.

Past Class of 1991 Reunions

Browse past reunion events and photos for your class here.

Plains '91 Apparel

Browse our apparel store for a wide range of Horsemen gear, from t-shirts and hoodies, to caps and accessories.

Class Yearbook

View past yearbooks

Connect with Class of 1991 Classmates

Travis Burchard

Donny Privett

Ernie Mckrachen

Chris Lyman

Nearby Plains Classmates

Class of 1989

8 classmates have joined

View Class of 1989 Alumni

Class of 1990

3 classmates have joined

View Class of 1990 Alumni

Class of 1993

6 classmates have joined

View Class of 1993 Alumni