Castleton State College is a public liberal arts college located in Castleton in the U.S. state of Vermont. Castleton has an enrollment of 2000 students and offers more than 30 undergraduate programs as well as master’s degrees in education. The college is accredited by the New England Association of Schools and Colleges. Castleton State College traces its history to the Rutland County Grammar School, chartered by the Vermont General Assembly on October 15, 1787. The Grammar School, likely the most advanced educational institution in Vermont at the time, taught Greek and Latin and helped to fulfill the Vermont Constitution's requirement of universal free education for Vermont's citizens. The school began its transition to a college in 1867, when the State Normal School was founded in Castleton. The Normal School, a term based on the French école normale supérieure, educated students for teaching careers. For 30 years the Normal School was privately owned by Abel E. Leavenworth and his son Philip. In 1912, the State of Vermont purchased the property. In 1947, the Normal School became Castleton Teachers College. In 1920, the school's charter lapsed.