President William McKinley High School, more commonly referred to as McKinley High School, is a comprehensive public high school in the Honolulu District of the Hawaii State Department of Education. It serves grades nine through twelve. McKinley is one of three schools in the Kaimuki-McKinley-Roosevelt Complex Area which includes Kaimuki High School and Roosevelt High School. It was founded as Fort Street English Day School in 1865. Later known as Honolulu High School, it was renamed in memorial to William McKinley, the twenty-fifth President of the United States, in 1907. President William McKinley High School is one of the oldest secondary schools in the state and several of its buildings have been listed on the National Register of Historic Places. The campus displays sculptures by Satoru Abe (1926–2025) and Bumpei Akaji (1921–2002). McKinley High School is accredited by the Western Association of Schools and Colleges.