The academy eventually evolved into a college, initially chartered as the Marietta Collegiate Institute and Western Teachers' Seminary on January 16, 1833. However, this institution lacked the critical authority to grant degrees, so a wholly new charter was approved two years later, bringing the renamed Marietta College into existence on January 16, 1835. The former Muskingum Academy was continued as the Marietta College College Preparatory Department until its elimination in 1913.