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. The school's main present building opened in 1900. It is operated by Chicago Public Schools. The school borders Oz Park, a public park owned by the Chicago Park District. The school was formerly known as North Division High School and then Robert A. Waller High School. In 1981, the school began its International Baccalaureate program.