Sachem High School Alumni
Lake Ronkonkoma, New York (NY)
William Onderdonk
Sachem High School
Class of 1985
→ Join 5763 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 137 class of 1985 alumni that have joined.
Margaret Margaret Guthrie
Class of 1982
Chris Smith
Class of 2009
Stacy Carpenter
Class of 2001
Katherine Schumaker
Class of 1973
Stacie Olenick
Class of 1990
Alex Garrett
Class of 1983
Peter Joesph
Class of 1993
Margaret Glennon
Class of 1970
James Graff
Class of 2000
Deborah Giampa
Class of 1981
Ira Work
Class of 1979
Jeannie Guercio
Class of 1979
Kimberly Kaznowski
Class of 1990
Anthony Bottari
Class of 1985
Rosaria Devitt
Class of 1991
Joan Mahon
Class of 1972
Laura Scholz
Class of 1986
Glenn Madden
Class of 1982
Irene Vazquez
Class of 1993
John Covello
Class of 1976
Mary Dowler
Class of 1975
Pete Stumpf
Class of 1996
John Macmillan
Class of 1987
Christopher Schwab
Class of 1996
