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.
Tobin St. Louis
Class of 1993
Thomas Heinssen
Class of 1986
Anthony Perna
Class of 1962
Jennifer Russo
Class of 1988
Mark Mcgroary
Class of 1966
Catherine Selak
Class of 1990
Dora Lavelle
Class of 1984
Michelle Vogt
Class of 1991
Tom Stinsman
Class of 1994
Raymond Taaffe
Class of 1972
Jack Keefe
Class of 1984
Ellen Burke
Class of 1963
Sally Benjamin
Class of 1976
Crystal Frare
Class of 2005
Sally Fontana
Class of 1982
Margaret Gaynor
Class of 1960
Scott Prieto
Class of 1981
Pete Leccese
Class of 1968
