Parkdale High School (PHS) is a public magnet high school located in Riverdale, Maryland, United States. It is part of the Prince George's County Public Schools system. Enrollment was 2,354 students in grades nine through twelve as of 2020. Parkdale High School serves: portions of Riverdale Park, all of Woodlawn, and the majority of New Carrollton. It hosts an International Baccalaureate (IB) magnet program.