When composing your list of school districts, leave room for the 3 CHSD in Nassau County. (I think these are the only CHSDs in New York State.) A CHSD is a Central High School District. Each CHSD is made up of 3 or more Union Free School Districts. The respective Union Free School Districts has its own school board that controls and operates the K-6 and middle schools as completely separate districts. Then each of these Union Free School Districts send 2 of their board members to form the CHSD school board, and it's this board that controls and operates the high school(s) in the CHSD. The 3 CHSD and the Union Free School Districts that are part of the CHSD are: 1. Valley Stream CHSD . Union Free School District 13 . Union Free School District 24 . Union Free School District 30 2. CHSD 2 . New Hyde Park-Garden City Park Union Free School District . Floral Park Bellerose Union Free School District . Elmont Union Free School District . Franklin Square Union Free School District 3. CHSD 3 . North Bellmore Union Free School District . North Merrick Union Free School District . Bellmore Union Free School District . Merrick Union Free School District Regards, Walter Greenspan