The Sewanhaka Central High School District is composed of Sewanhaka High School, Elmont Memorial High School, New Hyde Park Memorial High School, New Hyde Park Memorial High School, and one other. That other school serves students in the census-designated place of Nassau County in New York.
H. Frank Carey High School is a public high school located in Franklin Square, New York serving students in the seventh through twelfth grades from the towns of Franklin Square, Garden City South, West Hempstead, and Elmont. 
Garden City South is a hamlet and census-designated place (CDP) in Nassau County, New York, United States. 
 The district is currently composed of five high schools: Sewanhaka High School, Elmont Memorial High School, New Hyde Park Memorial High School, Floral Park Memorial High School, and H. Frank Carey Junior-Senior High School. 
