Tri-valley High School Alumni
Colton, South Dakota (SD)
Cathi Costain (Cathi Van Helden)
Tri-valley High School
Class of 1969
→ Join 1307 Alumni from Tri-valley High School that have already claimed their alumni profiles.
→ There are 52 classes, starting with the class of 1960 all the way up to class of 2021.
CATHI'S PROFILE
| First Name | Cathi |
| Last Name | Costain |
| Maiden Name | Van Helden |
| Graduation Year | Class of 1969 |
| Gender | Female |
| City | N/A |
| State/Province | SD |
| Country | United States |
| Occupation | Fraud Investigations |
| Married | Yes |
| Favorite School Memory | HS Basketball Tournaments - Big Winning Moments!! |
| About Me | Traveled quite a bit, raised kids and stayed living in the area! |
Class of 1969 Alumni and Other Nearby Classes
Cindy Van Duyn
Class of 1990
Richard Strenge
Class of 1968
Lisa Vandervliet
Class of 1999
Janine Van Liere
Class of 1983
Karletta Kaup
Class of 1993
Ana Olson
Class of 2001
Paul Siemonsma
Class of 1994
Jan Berens
Class of 1985
Walter Schaefer
Class of 1993
Chad Hartman
Class of 1995
Wayne Mulder
Class of 1976
Peggy Klinkel
Class of 1981
Kyle Robinson
Class of 1991
Joanna Dejong
Class of 1997
Kelsey Carlson
Class of 2015
Cliff Ramstad
Class of 1960
Laurie Swier
Class of 1974
Thomas Sletten
Class of 1970
