Check out who we are!

Cotter Schools, located in Winona, Minnesota, USA, is comprised of Cotter Junior High and Cotter High School. We serve motivated and engaged students in grades 7 through 12. We offer both a day student program and a residential/boarding student program. Over 300 students from the city of Winona, the towns surrounding Winona, and from over 12 countries around the world engage in rigorous academic study, faith-centered experiences, and personally enriching athletic and arts activities - all with one goal in mind: that each student discover and develop his or her fullest potential!

Overview/Student Body

  • School focus: college prep
  • Founded: 1911
  • Accredited by AdvancEd
  • Serves grades 7-12, co-ed
  • Enrollment: 2017/2018 - 320 students
  • Percent international/boarding students: 25%
  • Religious affiliation: Catholic, serving persons of all faiths
  • Campus size: 45 acres (18 hectares)

Classes Offered


  • 31 qualified, committed teachers
  • Advanced degrees: 68%
  • Average class size: 17
  • Student: Teacher ratio: 11:1

Graduation Requirements

Athletics and Activities

Test Scores

  • 14 AP scholars in 2017
  • ACT scores: ave. composite score of graduating seniors who took the exam = 23.4 (max. 36)
  • SAT scores: ave. composite score of graduating seniors who took the exam = 1227 (max. 1600)
  • High College Readiness Score (as reported by ACT)
  • Toefl testing center on campus
  • Use of WIDA - standardized testing tool to measure English language proficiency