Riverstone International School is a premier, private in , 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 .
A maximum of 32 students from the U.S. and around the world in grades 8-12 are enrolled in the school`s .
The school`s --, , , , and --provide pathways for students to explore academically and personally. Small classes and strong relationships with teachers facilitate a for students.
One hundred percent of graduates are accepted into 4-year . 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 Stats (2025)
- Grades: (ÌÇÐÄvlog¹ÙÍø Students) 8-12
- Grades: (Day Students) PK-12
- Enrollment: 425 students
- Yearly Tuition (ÌÇÐÄvlog¹ÙÍø 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
Upcoming Events
Top Rankings
Riverstone International School ranks among the top 20 boarding schools (out of 277 schools) for:
Category
Attribute
Student Test Scores
School Overview
School Focus
College Preparatory
College Preparatory
Grades Offered (ÌÇÐÄvlog¹ÙÍø)
8-12
9-12
Grades Offered (Day)
PK-12
9-12
School Type
Co-ed
Co-ed
Secondary Immersion Language
Spanish
n/a
Year Founded
1997
1907
Campus Size
14 acres
125 acres
School Motto
Courageous Journeys
School Mascot
Otter
School Calendar
Student Body
Enrollment
425 students
319 students
% Students of Color
15%
27%
% International Students
27%
20%
% Students ÌÇÐÄvlog¹ÙÍø
10%
70%
Average SAT Score
1306
(Out of 1600)
(Out of 1600)
* National Avg. »
Average ACT score
31
(Out of 36)
(Out of 36)
*National Avg. »
Offers Post-Grad Year
No
No
Academics and Faculty
Saturday Classes
No
No
Average Class Size
18 students
12
* National Avg. »
Student : Teacher Ratio
7:1
7:1
Number of IB Courses Offered
60
-
% Faculty with Advanced Degree
57%
72%
Summer Program Offered
No
Yes
Tuition Cost
Endowment Size
$4 million
$30 million
Yearly Tuition
(ÌÇÐÄvlog¹ÙÍø Students)
(ÌÇÐÄvlog¹ÙÍø Students)
$51,000
$66,900
Yearly Tuition
(Day Students)
(Day Students)
$24,600
(Please see this link for additional information by grade level: )
(Please see this link for additional information by grade level: )
$36,000
% Students on Financial Aid
25%
40%
Admissions
Acceptance Rate
80%
64%
Director of Admissions
Rachel Pusch
Application URL
AP / Advanced Courses
# of AP / Advanced Courses Offered
n/a
18
Courses
IB Biology HL / SL, IB Chemistry HL / SL, IB English Language & Literature HL / SL, IB Global Politics HL / SL, IB Mandarin HL / SL, IB Mathematics: Analysis and Approaches HL / SL, IB Mathematics: Applications and Interpretations HL / SL, IB Music HL / SL, IB Physics HL / SL, IB Psychology HL / SL, IB Spanish HL / SL, IB Theory of Knowledge, IB Visual Art HL / SL, IB World Religions SL, MYP Art, MYP English Language and Literature, MYP Health education, MYP Mandarin, MYP Math (skill level based for grades 9 - 10), MYP Music, MYP Spanish, MYP10 Chemistry, MYP10 Modern East Asian History, MYP10 Personal Project, MYP9 Conceptual Physics, MYP9 Modern European History, Pamoja Online Language ab-initio French, Pamoja Online Language ab-initio Mandarin, Pamoja Online Language ab-initio Spanish
Sports
# Interscholastic Sports Offered
8
16
Extracurriculars
Total Extracurricular Organizations
18
23
Extracurriculars
Club or Organization:
Athletic Leadership, Green Team, Language Clubs, Math Club, Model United Nations, Outdoor Leadership, Programming Club, Robotics Team, SAGA: Sexual and Gender Alliance, Science Bowl, Social Change Leadership, Student Council, Veggie Club, Yearbook Club
Arts and Music Programs:
Musical Ensemble Groups
Recreational Athletic Programs:
Climbing Club, Kayaking Club, Mountain Biking Club
Athletic Leadership, Green Team, Language Clubs, Math Club, Model United Nations, Outdoor Leadership, Programming Club, Robotics Team, SAGA: Sexual and Gender Alliance, Science Bowl, Social Change Leadership, Student Council, Veggie Club, Yearbook Club
Arts and Music Programs:
Musical Ensemble Groups
Recreational Athletic Programs:
Climbing Club, Kayaking Club, Mountain Biking Club
College Matriculation
College Acceptance Rate
100%
Year:
10 Most Popular College Choices (# Enrolled)
School Notes
- Our 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.
- : 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.
- : Students explore Idaho and Oregon's mountains and rivers with classmates and teachers.
- Located in the Pacific Northwest, is one of the most liveable and safe cities in the U.S. Our 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 and more than 30 , .
- Riverstone International School accreditations: International Baccalaureate Organization (IBO), National Association of Independent Schools (NAIS), NWAIS, The Association of ÌÇÐÄvlog¹ÙÍø Schools (TABS),AdvancEd
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 64%.
What sports does Riverstone International School offer?
Riverstone International School offers 8 interscholastic sports: Alpine Skiing, Basketball, Cheering, Cross Country Running, Mountain Biking, Snowboarding, Swimming and Volleyball.
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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The nearest boarding school to Riverstone International School is Sun Valley Community School (88.5 miles away)
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