In the 19th century, various private institutions existed within Plano for the education of children. One of these, the Plano Institute, was a private school founded in 1882 that offered an Artium Baccalaureatus degree. On June 9, 1891, the people of Plano determined by a vote that the city should assume control of the schools. In July of that same year, the citizens approved a fifty cent tax for school purposes and for the purchase of the Plano Institute's land and building. The building was used for the new Plano Public School, from which Plano Senior High School would develop. Thus, 1891 is generally considered the school's foundation year. The original school grounds would later become the Cox Administration Building. In 1892, Plano graduated its first class of five people.