Punahou School (known as Oahu College until 1934) is a private, co-educational, college preparatory school in Honolulu, Hawaii. More than 3,700 students attend the school from kindergarten through 12th grade. Protestant missionaries established Punahou in 1841. In 2006, it was ranked the greenest school in America. In 2017, Punahou's sports program was ranked second nationally in the MaxPreps Cup standings. Punahou's student body is diverse, with student selection based on both academic and non-academic considerations.