Mount Assisi Convent is the headquarters for the United States province of the School Sisters of St. Francis of Christ the King. The facility, which is located on the same grounds as Mount Assisi Academy, houses more than 45 Franciscan Sisters who serve in Lemont, Joliet, Chicago and Crest Hill.
The mission of the Franciscan Sisters is "to live the Gospel through a dedication to the apostolate of Christian education, care of the sick and the aged, and other works as needed and approved by the Church."