| First Name | Last Name | Note |
| Jack | Ackles | Died in Jan. 1978; lived in Ithaca |
| George | Auble | Died 11/15/95; Lived in McLean, VA (wife Suzanne) |
| Lynne | Barnette - Bailey | Died 3/13/2001; lived in Gentry AK |
| Jim | Bascom | Died 9/12/02; lived in Tallahassee FL (wife Judy) |
| Franklin | Beach,Jr. | Died July 1987 in Naranja FL (wife Linda Dumont) |
| Cindy | Beebee - Anderson | Passed away on December 15, 2006 |
| Judi | Bishop | Died in plane crash Nov. 1970 (per Kathy Illencsik Lilley) |
| Marge | Brennan - Harding | Died 7/21/05 in Ithaca |
| Marshall | Budd | Died at his residence in Egg Harbor Township, NJ on January 4; (wife Phyllis) |
| Sue | Burke - Howser | Died 12/9/03; lived in Ithaca (husband Arthur) |
| Ronald | Chandler | (left Ithaca school system after junior high) Deceased on January 25, 2009. He was living in Macedon, NY |
| Chuck | Ciaschi | Died in April 1995 (wife Mary Beth Pethybridge) |
| Nancie | Cooper - Conklin | Died 1/30/06; lived in Dryden [left IHS during freshman year] |
| Joyce | Cornelius - Knuutila | Died 5/13/02 in Toronto OH (husband Ron IHS class of 1955) |
| Peggy | Cross | Died of heart attack in October 1977 (per Kathy Illencsik Lilley) |
| Pete | Curry | (formally Albert) Died 7/20/2001; lived in Newfield |
| Dick | Cushman | Died on October 30, 1991 in Houston, TX |
| Charles | Darling | Charles died in an accident in California on 7.24.1958. He would have attended the University of Maine. |
| John | Davis | John passed away on 3/8/2010 in Muncie IN (wife Priscilla) |
| Dennis | Dean | Died 9/15/94 per Deanne (Dean) Pendergast |
| Julius | Eastman | Died on May 28, 1990 in Buffalo NY |
| Dave | Flavin | Died 10/11/2000; lived in Nokomis FL |
| Rich | Frazier | Died on May 8, 2009; lived in Burlington, NJ (wife Jeanette) |
| Dave | Graves | Died in May 1993 |
| Larry | Gray | Died 3/6/93 |
| Alan | Greene | Died 11/12/98 after brain tumor operation (per Ross Carlisle) |
| Dave | Grinnell | (married to Lucy nee Kimple, IHS class of 1958), Died on September 17, 2006 from cancer. |
| Pat | House - Senseman | Died 3/24/05; lived in Richardson TX (husband Jim) |
| Gary | Kemp | (formally Douglas Garrison Kemp) Died on December 8 at the Hospicare Residence (wife Marilyn) |
| Nick | Krukovsky | Died of blood disease 12/2/97 (per Kathy Illencsik Lilley) |
| Joyce | LaBarr - Poyer | Deceased |
| Rosemary | Lucidi - Reynolds | Died 4/27/05 in Ithaca |
| Connie | Lynch - Auble | Died 1/19/04 in Ithaca |
| Ian | MacLeod | Died on September 10, 1972; lived near Ann Arbor, MI |
| Chuck | McNeal | Died 10/30/04; lived in Freeville (wife Marna nee Lovejoy IHS class of 1960) |
| Barbara | Nelson - McDavitt | Died of blood disease 11/16/97; lived in Maynard MA (husband Peter) |
| Frank | Payne | Died in June 1968 (wife Julie Hopkins) |
| Pat | Poole - Morey | Died of viral pneumonia (per Kathy Illencsik Lilley) (husband Jim) |
| Paul | Predmore | Died on November 25, 1987; lived in Brooktondale |
| Peter | Pulsts | Died on July 22, 2009 in Palm Bay, FL (wife Claudette) |
| Jeanne | Pyle - Main | Died 2/2/03 in E. Lansing MI (husband Bill) |
| Theresa | Reeves - Slebrich | Died 12/15/91 per Louise Reeves McLaughlin |
| Ron | Saccucci | Died on March 25, 2009 in Elmira NY (wife Maureen) |
| Ethel | Seeber-Libman | (husband Michael) |
| Lynn | Sherwood | Died of cancer 5/12/95 (per cousin Anne Sherwood Oulette) |
| John | Teeter | Died 9/27/98; lived in Burlington Township NJ (wife Marilyn) |
| Ralph | Thorpe | Died on September 20, 2009 in Ithaca |
| Kathy | Trapp - Spencer | Died 6/20/1992; lived in Dryden |
| Shirley | Underhill - Lubin | Deceased on November 21, 2009 - She was living in Downey CA |
| Nick | Vlahos | (formally Anargyros) (left IHS; graduated from Cascadilla Prep) - Deceased April 19, 2008 in Ithaca (wife Pota) |
| Phyllis | Weber - Jones | Died on Nov. 19, 2006 in Avon Park, FL (husband Don) |
| Joe | White | Died 11/13/1993 in Newfield |
| Eugene | Whitted | Died on May 23, 2006 in Clifton AZ |
| Joanne | Wilkinson - Baker | (passed away on August 10,2008 following complications from surgery) (husband Art) |
| Chip | Willis | Died on May 13, 1962 as the result of a car accident |
| Craig | Wilson | Deceased |
| Dick | York | Died on December 17, 1967 as the result of a car accident; lived in East Greenbush, NY |
| Barry | Young | Died in car accident |