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.
Thomas Thomas Fitzgerald
Class of 1968
Charles Jarrett
Class of 1981
Renee Curry
Class of 1991
Brenda Thillet
Class of 1983
Eric Johannessen
Class of 1995
Lisa Cohen
Class of 1975
Mike Shavel
Class of 1981
John Mead
Class of 1967
Gina Marie
Class of 2004
Joe Oconnell
Class of 1989
Kevin Monahan
Class of 1970
Harriet Tubby
Class of 1972
Diane Stucchio
Class of 1993
Cathy Casanova
Class of 1980
Kerri Vargil
Class of 1980
Kelly Colwell
Class of 1982
Kathleen Brady
Class of 1988
Derek Mclaughlin
Class of 1981
