sentences:  Some cite the conversion of Saint Mary's University of Minnesota to a coeducational institution as the ultimate downfall of the College of Saint Teresa.That view, however, may overstate the importance of what was only one of many factors.Coeducation at St. Mary's University, then called Saint Mary's College, eventually ended the two schools' brother-sister relationship and harmed the social life of St. Teresa College, but that alone cannot explain the closing of the school.