Register as an alumni from Tri-valley High School (Colton South Dakota) and reunite with 1,299 classmates and old friends. Share your memories by posting photos or stories, or find out about your next class reunion!
Tri-valley Past Reunions
Browse through past Tri-valley High School events to reminisce as you view photos taken at our reunions:
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
Recently Joined Mustangs
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
Cindy Van Duyn
Class of 1990
Class of 1990
Find Classmates Tri-valley High School in Your Class
Tri-valley High School Football Results - 2025 Season
| Date | Opponent | Result |
|---|---|---|
| 08/28 | Custer (home) | 53-3 (win) |
| 09/04 | Milbank (away) | 34-0 (win) |
| 09/11 | Belle Fourche (away) | 30-14 (win) |
| 09/18 | Dakota Valley (home) | 20-7 (win) |
| 09/25 | Dell Rapids (away) | 14-22 (loss) |
| 10/02 | Madison (away) | 7-33 (loss) |
| 10/09 | Vermillion (away) | 36-21 (win) |
| 10/16 | Lennox (away) | 0-41 (loss) |