Riverstone International School is a premier, private International Baccalaureate World School in Boise, Idaho, offering day and boarding students challenging opportunities and the personal support to develop into independent, creative, and collaborative thinkers.
With 400 students enrolled from Preschool through High School, 40 countries are represented in the school`s community.
A maximum of 32 students from the U.S. and around the world in grades 8-12 are enrolled in the school`s boutique boarding program.
The school`s Five Pillars--Academic Excellence, Community and Service, Leadership by Example, International Understanding, and Outdoor Education--provide pathways for students to explore academically and personally. Small classes and strong relationships with teachers facilitate a highly personalized educational experience for students.
One hundred percent of graduates are accepted into 4-year colleges worldwide. Alumni credit their connections to teachers, friendships with classmates from around the world, the global context of the IB curriculum, and outdoor experiences as having the biggest impact on their future success.
Quick Facts (2026)
- Grades: (Boarding Students) 8-12
- Grades: (Day Students) PK-12
- Enrollment: 425 students
- Yearly Tuition (Boarding Students): $51,000
- Yearly Tuition (Day Students): $24,600
- Acceptance rate: 80%
- Average class size: 18 students
- Application Deadline: None / Rolling
- Source: Verified school update
Top Rankings
Riverstone International School ranks among the top 20 boarding schools (out of 307 schools) for:
Category
Attribute
Student Test Scores
School Overview
School Focus
College Preparatory
College Preparatory
Grades Offered (Boarding)
8-12
9-12
Grades Offered (Day)
PK-12
Pre-K-12
School Type
Co-ed
Co-ed
Secondary Immersion Language
Spanish
n/a
Year Founded
1997
1909
Campus Size
14 acres
125 acres
School Motto
Courageous Journeys
Student Body
Enrollment
425 students
300 students
% Students of Color
15%
25%
% International Students
27%
20%
% Students Boarding
10%
70%
Offers Post-Grad Year
No
No
Academic Profile
Saturday Classes
No
No
Student-Teacher Ratio
7:1
7:1
Number of IB Courses Offered
60
-
% Faculty with Advanced Degree
57%
70%
Summer Program Details
Accreditations
The Association of Boarding Schools (TABS)
# of AP / Advanced Courses Offered
n/a
17
Courses
Tuition & Financial Aid
Endowment Size
$4 million
$25 million
Yearly Tuition
(Boarding Students)
(Boarding Students)
$51,000
$59,900
Yearly Tuition
(Day Students)
(Day Students)
$24,600
(Please see this link for additional information by grade level: www.riverstoneschool.org)
(Please see this link for additional information by grade level: www.riverstoneschool.org)
$33,500
% Students on Financial Aid
25%
40%
Admissions
Acceptance Rate
80%
58%
Director of Admissions
Rachel Pusch
Application URL
Sports
# Interscholastic Sports Offered
8
16
Colors
White, Blue
School Mascot
Otter
Extracurriculars
Total Extracurricular Organizations
18
23
Extracurriculars
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
Athletic LeadershipGreen Team
Language ClubsMath Club
Programming ClubRobotics Team
SAGA: Sexual and Gender AllianceScience Bowl
Social Change LeadershipStudent Council
Veggie ClubYearbook Club
Arts and Music Programs:
Musical Ensemble Groups
Recreational Athletic Programs:
Climbing ClubKayaking Club
Mountain Biking Club
College Matriculation
School Notes
- Our boutique boarding program provides a family-like experience for a maximum of 32 students from the U.S. and around the world. Our downtown Boise dormitory location gives students the opportunity to experience the Pacific Northwest culture and connect with the greater Boise community.
- International Baccalaureate experts: Riverstone is one of four IB continuum schools offering a boarding program. Teachers provide guidance and encouragement to students, and Riverstone's three-year average IB diploma program pass rate exceeds the global average.
- Outdoor education: Students explore Idaho and Oregon's mountains and rivers with classmates and teachers.
- Located in the Pacific Northwest, Boise, Idaho is one of the most liveable and safe cities in the U.S. Our recently-built dormitory is located in downtown Boise, the third most populous city in the Pacific Northwest, with easy access to skiing, kayaking, and mountain biking. Our four-season climate and safe city provide opportunities for students to recreate, shop, and explore all our beautiful city and state have to offer.
- The school offers a concierge college counseling and more than 30 athletic, musical, and academic extracurricular activities.
Source: Verified school update
Frequently Asked Questions
How much does Riverstone International School cost?
Riverstone International School's tuition is approximately $51,000 for boarding students and $24,600 for day students.
What is the acceptance rate of Riverstone International School?
The acceptance rate of Riverstone International School is 80%, which is higher than the boarding school average of 58%.
What sports does Riverstone International School offer?
Riverstone International School offers 8 interscholastic sports: Alpine Skiing, Basketball, Cross Country Running, Mountain Biking, Snowboarding, Soccer, Swimming and Diving and Volleyball.
Does Riverstone International School offer a summer program?
Yes, Riverstone International School offers a summer program. Visit their summer school page for more information.
What is Riverstone International School's ranking?
Riverstone International School ranks among the top 20 boarding schools for High ACT scores.
When is the application deadline for Riverstone International School?
The application deadline for Riverstone International School is rolling (applications are reviewed as they are received year-round).
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