John "Jack" Cassidy

John “Jack” Cassidy, 81, of Mount Sinai. Beloved husband of Suzan, Devoted father of Brian, Colleen and Adam. Fond father-in-law of Ryan, Christian and Alexandra. Cherished grandfather of Catherine, Cassidy, Christine, James and Adeline. 

John was born and raised in Central Islip. He graduated from Central Islip High School in 1960 and attended CW Post playing football, baseball and golf. Upon graduation he was commissioned as an officer in the USMC eventually rising to the rank of Colonel. 

Jack served (two) tours in Vietnam and earned a Silver Star, two Bronze Stars and a purple heart among numerous other commendations. Returning from Vietnam, Jack started his long tenure in Central Islip School District where he was a long-time principal of the Ralph G Reed school and also served as Asst Superintendent.

Jack loved the NY Yankees, NY Giants and to play a round of golf. He was a proud member of the VFW and Amvets.

He liked to think he could tell a joke, but was a better storyteller and always quick with an obscure historical reference.

In lieu of flowers, the family respectfully requests donations to the Cassidy Family Foundation,  85 East Main Street, Rear Ent., Bay Shore, New York 11706  or Venmo@cassidyfoundation