Register as an alumni from Tri-valley High School (Colton South Dakota) and reunite with 1,307 classmates and old friends. Share your memories by posting photos or stories, or find out about your next class reunion!
Class Yearbooks
Mustangs Football
Varsity Football Schedule 2026-27
08/27 vs Milbank
09/03 vs Madison
09/10 vs Lennox
09/24 vs Custer
10/08 vs Dell Rapids
10/15 vs Beresford
10/21 vs Sioux Falls Christian
09/03 vs Madison
09/10 vs Lennox
09/24 vs Custer
10/08 vs Dell Rapids
10/15 vs Beresford
10/21 vs Sioux Falls Christian
Recently Joined Mustangs
Andrea Mader
Class of 1997
Class of 1997
Becky Anfinson
Class of 1986
Class of 1986
Shannon Davis
Class of 1988
Class of 1988
Kari Houser
Class of 2006
Class of 2006
Cathi Van Helden
Class of 1969
Class of 1969
Akiko Jinno
Class of 1983
Class of 1983
Paul Meyer (siers)
Class of 1986
Class of 1986
Julie Johnson
Class of 1971
Class of 1971
Mark Koopman
Class of 1988
Class of 1988
Dixie Waugh
Class of 1994
Class of 1994
Melissa Vig
Class of 1997
Class of 1997
Deanna Johnson
Class of 1969
Class of 1969
Tri-valley Yearbooks
Flip through class yearbooks or browse photo albums from classmates, and see what they look like now:
Tri-valley Apparel
Check out our huge selection of Mustangs spiritwear, including shirts, shorts, accessories and much more!
Mustangs PRIDE
Tri-valley High School Apparel