After beginning her career as a teacher in Tennessee, she moved to Bozeman and began teaching institution management at Montana State College (now Montana State University) in 1930. She was also the staff director of Hamilton Hall, the "women's freshman dormitory and the only dormitory on campus" during this time.University, M. (2020, September 08). At 103, Billings man is oldest living grad of Montana State. Retrieved January 11, 2021, from https://billingsgazette.com/news/local/at-103-billings-man-is-oldest-living-grad-of-montana-state/article_7e36e943-a803-55b5-990a-7696a1bca606.html In 1946, she became the director of the Student Union. As director, she planned kitchen and dining facilities, and the Student Union Building designated the Leigh Lounge in her honor in 1990.President's Commission on the Status of University Women, “Mildred Leigh.” Extraordinary Ordinary Women of MSU, Profiles, 2018, http://www.montana.edu/president/universitywomen/extraordinary/eow_profiles/leigh.html
