Sachem High School Alumni
Lake Ronkonkoma, New York (NY)
William Onderdonk
Sachem High School
Class of 1985
→ Join 5855 Alumni from Sachem High School that have already claimed their alumni profiles.
→ There are 66 classes, starting with the class of 1958 all the way up to class of 2024.
WILLIAM'S PROFILE
| First Name | William |
| Last Name | Onderdonk |
| Graduation Year | Class of 1985 |
| Gender | Male |
| Hometown | Holbrook, New York |
| Relationship Status | Married |
| About Me | Living and working in beautiful Lancaster County, PA. |
Class of 1985 Alumni
→ Reunite with 142 class of 1985 alumni that have joined.
Denise Nelson
Class of 1985
Richard Richard
Class of 1983
Alex Garrett
Class of 1983
Donna Avellino
Class of 1975
Lynn Roberts
Class of 1987
Danielle Merckling
Class of 1999
Rorey Sotela
Class of 2001
Rachel Greenhaus
Class of 1990
Marc Johnson
Class of 1993
Jena Friedlander
Class of 1997
Leighann Murphy
Class of 1991
Jennifer Finn
Class of 1994
Robert Garcia
Class of 1990
John Turner
Class of 1980
Peter Joseph Memoli
Class of 1991
Dana Rostern
Class of 2005
Janet Wittemann
Class of 1969
Linda Grande
Class of 1981
