The University of Central Oklahoma, often referred to as UCO, is a coeducational public university located in Edmond, Oklahoma. The university is the third largest in Oklahoma, with almost 18,000 students and approximately 434 full-time and 400 adjunct faculty. Founded in 1890, the University of Central Oklahoma is the first institution of higher learning to be established in the state of Oklahoma, making it one of the oldest universities in the southwest region of the United States. The Environmental Protection Agency (EPA) recognized the University of Central Oklahoma as the 2009-2010 Individual Conference Champion for using more green power than any other school in the Lone Star Conference. The University of Central Oklahoma was founded on December 24, 1890, when the Territorial Legislature voted to establish the Territorial Normal School, making UCO the oldest public institution of higher education in Oklahoma. Classes were first held in November 1891, whereas Oklahoma A&M College held its first classes in December 1891 and the University of Oklahoma began in fall 1892.