Founded in 1911, Cotter Schools is a private Catholic school located in Winona, Minnesota, U.S.A. Our mission is to challenge students to achieve their full potential and use their lives in service of others. At Cotter we challenge our student to be the difference. This is accomplished by students engaging in rigorous academic study and personally enriching athletics and club activities. We serve motivated and engaged boarding students from grades 7 to grades 12.