Riverstone International School

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  • International Baccalaureate Programme
  • Located in Boise Idaho, the second largest City in the Pacific Northwest and top-ranked for safety, livability and recreation
  • 350 students (Pre School-12: boarding (grades 9-12); 20% international; Average class size 15 students.
  • Coeducational boarding with no religious affiliation
  • Excellent University Placement including Brown University, Harvard University, Stanford University, among others
  • ESL program

What's special?

Authorized to offer all 3 International Baccalaureate World School programs | Outdoor program | Strong Model UN program. 

See a more complete list of college acceptances.

100% including: Brown University, Harvard University, Pomona College, Stanford University, University of Chicago

Fast facts

Four seasons, hot, dry summers and moderately cold winters
Coed 350 (Pre-School-12) students
20% international students
15, Student/faculty ratio: 7:1
45 , 45% with advanced degrees
Boise, ID (BOI)


Marking system & graduation requirements add

Marking System:

Two semesters per year. Students are graded on the International Baccalaureate system of 1-7; grades are also translated to U.S. grading scale of A, B, C, etc. on report cards and transcripts.

Graduation Requirements:

The minimum graduation requirements for grades 9 through 12 are as follows:

  • IB Subject Groups:
  • Studies in Language and Literature - 4 years (English literature or native language)
  • Language Acquisition - 4 years (Non-native language: Spanish, French, Mandarin or English)
  • Individuals and Societies - 4 years (Global Politics, World Religions, Geography)
  • Mathematics - 4 years
  • Science - 4 years (Physics, Chemistry, Biology - all with laboratory)
  • The Arts - 4 years (Visual Arts and Music)
  • Design Technology & Physical Education - 2 years (Grades 9 & 10 only)
  • Plus Diploma Programme Core Requirements:
  • Theory of Knowledge
  • Creativity, Action and Service
  • Extended Essay
Science class

Special programs, programs of study... add

Special Programs

Outdoor education program that includes backpacking through the Sawtooth Mountains, Idaho desert and Utah Grand Gulch, overnight yurt and snow cave trips while learning about environmental sustainability and acquiring outdoor and life skills.

ACT Scores

Average ACT score: 29

SAT Scores

Average SAT score: 2018


Riverstone International School is accredited by the AdvancED, International Baccalaureate World School (IB), Northwest Association of Independent Schools (NWAIS), National Association of Independent Schools (NAIS), State of Idaho.

Arts add

Studio Arts, Instrumental Music, Music, Music Composition, Performing Arts, Theater
Arts image


  • Basketball
  • Orienteering
  • Skiing
  • Snowboarding
  • Soccer
  • Swimming
  • Volleyball

Campus features

Three academic buildings, Phase 1 of a new Middle and High School opened 2017, gymnasium, soccer field, and tennis courts. New dormitory is located in vibrant downtown Boise with daily transportation to and from school provided.

Extracurricular activities

  • Climbing Club
  • Kayaking Club
  • Language Club
  • Model UN
  • Mountain Biking Club
  • National Historic Day
  • Student Council
  • Veggie Club
  • Yearbook
Chinese, French, Spanish

Admissions Requirements


gr. 9: 50 iBT gr. 10: 70 iBT gr. 11: 80 iBT

Not required


Feb. 15 Rolling

ETS 5985

Estimated Costs


ESL is included in tuition

$1,000 New Student Enrollment Fee

Student Account - students must arrive at school with an active credit/debit card

$1,250 Health Insurance

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