Hillsdale High School Alumni
San Mateo, California (CA)
Heather Costes
Hillsdale High School
Class of 1989
→ Join 3867 Alumni from Hillsdale High School that have already claimed their alumni profiles.
→ There are 62 classes, starting with the class of 1955 all the way up to class of 2022.
HEATHER'S PROFILE
| First Name | Heather |
| Last Name | Costes |
| Graduation Year | Class of 1989 |
| Gender | Female |
| City | N/A |
| State/Province | CA |
| Country | United States |
| Occupation | Documentation Engineer Sr |
| Married | No |
| About Me | I work at an Aerospace company in Sunnyvale. |
Class of 1989 Alumni
→ Reunite with 80 class of 1989 alumni that have joined.
Nathan Chinbong
Class of 1992
Jansen Borromeo
Class of 2000
Cindy Sanders
Class of 1997
Kathy Brigham
Class of 1963
Bert Chan
Class of 1996
Sandra Hayter
Class of 1961
Jody Bratt
Class of 1985
Rolf Staudhammer
Class of 1966
Shay Ingelfinger
Class of 1999
Judy Galvez
Class of 1994
Christine Aguado
Class of 1991
Thomas Durant
Class of 2014
Sarah Seigart
Class of 1995
Michael Cardona
Class of 2002
Danielle Patti
Class of 1983
Marina Kyriakis
Class of 1979
Rex Sims
Class of 2002
Bob Steiger
Class of 1966