Seaford Union Free School District is a public school district based in Seaford, New York in the United States. , the school district has 2,181 students enrolled. The Seaford Union Free School District includes Seaford Manor Elementary, Seaford Harbor Elementary, Seaford Middle School, and Seaford High School. The District encompasses 82 square miles in lower Delaware and includes the communities of Seaford and Blades. The Nanticoke people inhabited the area where Seaford now sits. When Europeans arrived, it became a center for agriculture and trading. In 2017 Adele Pecora became the superintendent. She previously worked for the Commack School District and the Island Tree School District.