- Sudbury Valley School
Managed by the weekly school meeting, where every student and staff member has a vote.
- Wisconsin Interscholastic Athletic Association (WIAA)
Features information on tournaments, rules and regulations, committee members, governance structure, and more for the high school athletic organization.
- Chu Hai College
- Kamehameha Schools (2)
- Sidwell Friends School, The (1)
- Punahou School (1)
- Holy Trinity School
Coeducational day school for students from grade one through university entrance.
- Appleby College
Independent school offering programs for boys and girls from grade 7 to OAC.
- Hudson College
Private, non-denominational, co-educational day school providing courses from pre-kindergarten to university entrance.
- Westtown School
Coeducational boarding and day college-preparatory and religious studies school. Boarding grades 9-12, day grades PK-10.