The Morris Industrial School for Indians was founded in 1887 by a group of nuns from the Sisters of Mercy order under the leadership of Mary Joseph Lynch. Recruiting students from the Indian reservations was difficult for Lynch until she developed connections with the Turtle Mountain Band of Chippewa Indians, which had a high percentage of members converted to Catholicism.
You may be able to get more information by getting a hold of the archivist, or writing to the University of Minnesota Morris. I found this information while researching my Grandpa who went to the school as a boy who was alone in the world with nowhere to go after he was aged out at the Washburn Orphan Asylum. Washburn is in Minneapolis. You might also find information at the Minnesota Historical Society.