Boarding School Review - Established 2003
Sun Valley Community School
Riverstone International School

Best Idaho Boarding Schools (2026)

For the 2026 school year, there are 2 college-prep and junior boarding schools serving 860 students located throughout Idaho.
You can also browse our full boarding school directory or specify additional search criteria.

Quick Facts (2026)

  • # Boarding Schools: 2
  • # Students Served: 860
Sun Valley Community School
Riverstone International School

Quick Facts (2026)

  • # Boarding Schools: 2
  • # Students Served: 860

Top Idaho Boarding Schools (2026)

Riverstone International School Photo - Welcome to Riverstone International School! We look forward to welcoming you to our school in beautiful Boise, Idaho!
Riverstone International School
Gr: 8-12 | PK-12 (day) | 425 students
Student-teacher ratio: 7:1
Avg. class size: 18 students
Acceptance rate: 80%
Tuition listed
5521 East Warm Springs Avenue
Boise, ID 83716
(208) 424-5000
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Sun Valley Community School Photo - Students from around the nation and world come to Sun Valley Community School in Sun Valley, Idaho, to fulfill their potential and pursue their passions.
Sun Valley Community School
Gr: 9-12 | PK-12 (day) | 435 students
Student-teacher ratio: 6:1
Avg. class size: 15 students
Acceptance rate: 30%
Tuition listed
1 Community School Drive
Sun Valley, ID 83353
(208) 622-3960
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Frequently Asked Questions

How many boarding schools are located in Idaho?
There are 2 college-preparatory boarding schools located in Idaho.
What is the oldest boarding school in Idaho?
Sun Valley Community School, founded in 1973, is the oldest boarding school in Idaho.

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