Lincoln Park High School (LPHS) is a public 4–year high school located in the Lincoln Park neighborhood on the north side of Chicago, Illinois, United States. Lincoln Park High School, operated by the Chicago Public Schools district, opened its main present building in 1900. The school borders Oz Park, a public park owned by the Chicago Park District. It was formerly known as North Division High School and then Robert A. Waller High School. In 1981, the school began its International Baccalaureate (IB) program. It was one of the first schools to begin the program within the Chicago Public Schools district.