Riverstone International School is an IB World School in Boise, Idaho, serving approximately 300 students from preschool through Grade 12. The school represents over 41 countries and nationalities. Boarding is available for grades 8-12 on a 14-acre campus. Ranked the number 1 private school in Boise by Niche, 97% of graduates are accepted into top 150 US colleges and universities. The Class of 2025 earned an average of USD 305,000 per student in merit-based aid. Over one-third of students receive tuition assistance. The school is built on five pillars: Academic Excellence, Community and Service, Leadership by Example, International Understanding, and Outdoor Education. 61% of teachers hold advanced degrees.
Location
Riverstone International School is on East Warm Springs Avenue in Boise, Idaho, on a 14-acre campus. Boise offers access to outdoor recreation in the foothills and mountains of southern Idaho.
Stages
The school serves students from preschool and pre-kindergarten through Grade 12, covering elementary, middle, and high school.
Type
Riverstone is an independent, co-educational day and boarding school. Boarding is available for students in grades 8-12. Family ability to pay is not a factor in admissions.
Pupil Nationality Mix
Over 41 countries and nationalities are represented in the student body.
Bus service
Transportation services are offered for students.
Tuition details are available from the admissions office. Over one-third of students receive tuition assistance or scholarships. Family ability to pay is not an admissions factor.
Boarding Arrangements
Modern boarding facilities are available for students in grades 8-12. Boarding students join day students in the full IB programme and co-curricular activities.
Governance and Ownership
Riverstone International School is an independent school in Boise, Idaho.
Curriculum
Riverstone is an IB World School offering the International Baccalaureate programme across all age groups. The school achieves higher-than-average IB pass rates. 61% of teachers hold advanced degrees.
Exam Results
97% of graduates are accepted into top 150 US colleges and universities. The Class of 2025 earned an average of USD 305,000 per student in merit-based aid. The school achieves higher-than-average IB pass rates.
Higher Education Progression
97% of graduates are accepted into top 150 US colleges and universities. Merit-based aid averages USD 305,000 per student for the Class of 2025.
History
Riverstone International School has established itself as Boise's top-ranked private school, built on five foundational pillars that guide its educational mission.
Community
The school community represents over 41 countries and nationalities. With approximately 300 students, the school offers a close-knit, internationally diverse learning environment.
Facilities Overview
The school sits on a 14-acre campus in Boise with modern boarding and academic facilities. Before and after care activities are available.
Sports Facilities
Athletics programmes are offered across the school.
Extra Curricular Facilities
Clubs, outdoor education activities, and the Otter Camp summer programme extend learning beyond the classroom. The five pillars include outdoor education and community service.
Academic & Intellectual
The IB programme develops critical thinking and academic rigour. 97% of graduates enter top 150 US universities.
Cultural & Language
Over 41 nationalities create a multicultural school community that embodies the IB's emphasis on international understanding.
Community & Service
Community and Service is one of the school's five foundational pillars. Students engage in service projects as part of the IB programme.
Leadership & Professional
Leadership by Example is one of the five pillars. The school cultivates leadership skills through the IB programme and outdoor education.
Lifestyle & Wellbeing
Outdoor Education is a foundational pillar. The school's Idaho location provides access to hiking, skiing, and outdoor adventure.
Language Provision
English is the language of instruction. Language study is a component of the IB programme.
Awards
Niche #1 — Ranked the number one private school in Boise by Niche.com.
Accreditations
IB World School — Accredited to deliver the International Baccalaureate programme. Niche.com — Ranked #1 Private School in Boise (2026).
Admissions
1. Enquire or visit the admissions portal. 2. Enrolment for 2026-2027 is open. 3. Family ability to pay is not an admissions factor. 4. Over one-third of students receive tuition assistance or scholarships. 5. Boarding available for grades 8-12.
Scholarships
Over one-third of students receive tuition assistance or scholarships. The school does not consider family ability to pay in admissions decisions.
Sage International School of Boise is a tuition-free public charter school offering the full K-12 IB curriculum, one of only three public schools nationally to do so. Authorised for PYP, MYP, DP, and Career-related Programme, it emphasises inquiry-based learning, social-emotional well-being, and service learning.
Location
1513 E Tyrell Lane, Boise, ID 83706. Also Middleton campus.
Stages
K-12 (Boise). K-11 expanding to K-12 (Middleton).
Type
A tuition-free co-educational public charter school.
Governance and Ownership
Public charter school. Two campuses.
Curriculum
Full IB K-12: PYP (K-5), MYP (6-10), DP (11-12), Career-related Programme (11-12, Boise only). IB Diploma requires study of at least two languages.
Social and Emotional Learning (SEL)
Focus on social-emotional well-being alongside academics.
Community
Inclusive international learning community.
Facilities Overview
Two campuses: Boise and Middleton, Idaho.
Extra Curricular Facilities
Service learning and community engagement.
Academic & Intellectual
IB Career-related Programme.
Community & Service
Service learning and community engagement programmes.
