John F. Kennedy Catholic High School is a Roman Catholic, coeducational high school college preparatory school located in Somers, New York. The school was opened as St. Mary's High School in 1925 and had its last graduating class in June 1966. It was reopened under its current name in September 1966, and serves students in grades 9–12; its president is Father Mark Vaillancourt. The students at Kennedy come from all over Westchester County, Southern Dutchess County and Putnam County, both located in southern New York.