The University of Saint Mary is a private Catholic university in Leavenworth, Kansas, United States. It is sponsored by the Sisters of Charity of Leavenworth, who established it in 1923 as Saint Mary College. Though it was originally a school for women, the school is now coeducational. The mother house of the order is also on the premise…The University of Saint Mary is a private Catholic university in Leavenworth, Kansas, United States. It is sponsored by the Sisters of Charity of Leavenworth, who established it in 1923 as Saint Mary College. Though it was originally a school for women, the school is now coeducational. The mother house of the order is also on the premises. The university offers 26 bachelor's degree programs and six master's degree programs.