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.
John Davidson
Class of 1974
Cath Stallone
Class of 1963
Natalie Berman
Class of 1961
Elizabeth Molinari
Class of 1990
Thomas Keegan
Class of 1974
Dorothy Proscia
Class of 1983
Ralph Passarelle
Class of 2004
Ronald Eddy
Class of 1972
Cheryl Masone
Class of 1978
Domie Rewity
Class of 2009
Christine Stabile
Class of 1993
William Swan
Class of 1998
Michael Maucelli
Class of 2000
Dan Alcalde
Class of 1993
Tammy Willis
Class of 1990
Jason Schaefer
Class of 1992
Wayne Cassidy
Class of 1981
Mary Guardiani
Class of 1987
