Indian Mountain School (IMS) is a boarding and day school for students in Pre-K through Grade 9.
At IMS, students belong, thrive, and build a confident and healthy sense of self.
We care deeply about our people, our land, and our world, and we transform that care into action.
We teach our students that service is at the heart of leadership.
Our curriculum blends student-centered, curiosity-driven learning with essential foundational skills. Positive, trusting relationships allow our students to discover their full potential while preserving the joys of childhood and a sense of adventure.
Quick Facts (2026)
- Grades: (Boarding Students) 6-9
- Grades: (Day Students) PK-9
- Enrollment: 300 students
- Yearly Tuition (Boarding Students): $88,385
- Yearly Tuition (Day Students): $47,440
- Acceptance rate: 35%
- Average class size: 12 students
- Application Deadline: None / Rolling
- Source: Verified school update
School News
- Super Bowl Champ Malcolm Mitchell Visits IMS - 04/22/2026On April 17 and 18, IMS welcomed Super Bowl LI Champion, children's book author, and literacy advocate Malcolm Mitchell as part of their Courage to Climb Higher Speaker Series.
Top Rankings
Indian Mountain School ranks among the top 20 boarding schools (out of 273 schools) for:
Category
Attribute
Student Attention
School Overview
Definition of Terms | 2025 School Data
Indian Mountain School
School Focus
Grades Offered (Boarding)
6-9
Grades Offered (Day)
PK-9
School Type
Co-ed
ADD/ADHD Support
Supports Learning Differences (LD)
Learning Difference Programs
Dyslexia / Language-based
Religious Affiliation
Year Founded
1922
Campus Size
600 acres
First Day of School
Wed. Sep 9, 2026
Last Day of School
Fri. Jun 11, 2027
School Motto
Life through Service
Student Body
Enrollment
300 students
% Students of Color
10%
% International Students
25%
% Students Boarding
35%
Academic Profile
Saturday Classes
No
Classroom Dress Code
Average Class Size
12 students
Student-Teacher Ratio
4:1
# of AP / Advanced Courses Offered
2
ESL Courses Offered
% Faculty with Advanced Degree
25%
Summer Program Offered
Summer Program Details
Accreditations
The Association of Boarding Schools (TABS)
Junior Boarding Schools Association (JBSA)
Junior Boarding Schools Association (JBSA)
# of AP / Advanced Courses Offered
2
Courses
AP Computer Science PrinciplesAP Precalculus
Tuition & Financial Aid
Endowment Size
$12 million
Yearly Tuition
(Boarding Students)
(Boarding Students)
$88,385
Yearly Tuition
(Day Students)
(Day Students)
$47,440
Tuition international students
$95,840
Yearly Tuition
(5 Day Boarding)
(5 Day Boarding)
$82,870
% Students on Financial Aid
30%
Avg. Financial Aid Grant
$17,000
Merit Scholarships Offered
Admissions
Application Deadline
None / Rolling
Acceptance Rate
35%
Director of Admissions
Charles Brown
Application URL
Sports
# Interscholastic Sports Offered
19
Colors
Maroon and Gray
School Mascot
Falcon
Extracurriculars
Total Extracurricular Organizations
39
Extracurriculars
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
3D PrintingBaking
ChessChinese Calligraphy
CodingCooking
Digital PhotographyFinancial Literacy
Green TeamHaunted Trail Design
Lego BuildersLower Campus Mentors
Math CountsModel United Nations
SewingStudent Council
Ukuleleyearbook
Arts and Music Programs:
Recreational Athletic Programs:
College Matriculation
10 Most Popular College Choices (# Enrolled)
School Notes
- IMS is more than a school. It's a diverse and inclusive environment grounded in meaningful relationships, where children are encouraged to be curious, to take risks, and to embrace the adventure of learning while also celebrating the joy of childhood. Together, our teachers and students navigate an increasingly complex world with intellect, creativity, equity, and optimism. We don't shy away from difficult conversations; we approach them with honesty, compassion, and respect. The Mountain provides a unique learning environment for both day and boarding students, from Pre-K through Grade 9. At IMS, we believe that growth rarely follows a straight line. It takes courage to stray from the expected path, and that courage is something we witness every day in our students, guided and supported by an exceptional team of educators and staff. Thank you for your interest in Indian Mountain School. We are eager to welcome you.
- LD types supported: Dyslexia / Language-based
- Sample of notable school alumni/alumnae:
- John Avildsen '51 - Director of The Karate Kid and Rocky.
- Douglas Tompkins '57 - Environmentalist and Co-Founder of The North Face and ESPRIT
- Addison O'Dea '94 - Documentary Filmmaker
- Dominic Sessa '18 - Actor
Source: Verified school update
Frequently Asked Questions
How much does Indian Mountain School cost?
Indian Mountain School's tuition is approximately $88,385 for boarding students and $47,440 for day students.
What schools are Indian Mountain School often compared to?
Indian Mountain School is often viewed alongside schools like Rectory School by visitors of our site.
What is the acceptance rate of Indian Mountain School?
The acceptance rate of Indian Mountain School is 35%, which is lower than the boarding school average of 64%.
Who are famous alumni from Indian Mountain School?
Indian Mountain School famous alumni include: John Avildsen '51, Douglas Tompkins '57, Addison O'Dea '94 and Dominic Sessa '18.
What sports does Indian Mountain School offer?
Indian Mountain School offers 19 interscholastic sports: Alpine Skiing, Baseball, Basketball, Cross Country, Cross Country Running, Dance, Equestrian, Golf, Ice Hockey, Lacrosse, Mountain Biking, Snowboarding, Soccer, Softball, Squash, Swimming, Tennis, Ultimate Frisbee and Volleyball.
Does Indian Mountain School offer a summer program?
Yes, Indian Mountain School offers a summer program. Visit their summer school page for more information.
What is Indian Mountain School's ranking?
Indian Mountain School ranks among the top 20 boarding schools for Low student-teacher ratio.
When is the application deadline for Indian Mountain School?
The application deadline for Indian Mountain School is rolling (applications are reviewed as they are received year-round).
Related Schools
Show me:
Popular comparisons: Indian Mountain School vs. Rectory School
People that viewed Indian Mountain School also viewed these schools: Rectory School, The Bement School, Fay School, North Country School and The MacDuffie School.
The nearest boarding school to Indian Mountain School is Salisbury School (5.7 miles away)
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