Atlanta Public Schools is a school district based in Atlanta, Georgia, United States. APS is run by the Atlanta Board of Education with superintendent Meria Carstarphen. The system has an active enrollment of 54,956 students, attending a total of 103 school sites: 50 elementary schools (three of which operate on a year-round calendar), 15 middle schools, 21 high schools, 4 single gender academies and 13 charter schools. The school system also supports two alternative schools for middle and/or high school students, two community schools, and an adult learning center.