Indian Mountain School is a boarding and day school for students in Pre-K through Grade 9.
At IMS, individuals 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)
- Top-Ranked CT School
- Grades: Prekindergarten-9
- Enrollment: 300 students
- Yearly Tuition: $88,385
- Acceptance rate: 35%
- Average class size: 12 students
- Application Deadline: None / Rolling
- Source: Verified school update
School News
- - 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% of private schools in Connecticut for:
Category
Attribute
Acceptance Rate
Student Body
Sports offered
Extracurriculars
School History
School Overview
School Membership(s)School Assoc.
Religious Affiliation
Grades Offered
Grades Prekindergarten-9
ADD/ADHD Support
Yes
Learning Difference Programs
Yes
Learning Programs Supported
Dyslexia
Year Founded
1922
Colors
Maroon, Gray
School Calendar
First Day of School
Wed. Sep 9, 2026
Last Day of School
Fri. Jun 11, 2027
Campus Size
600 acres
Student Body
Total Students
300 students
Student Body Type
Co-ed
% Students of Color
30%
State avg.: 31%
Students by Grade
Academics and Faculty
Total Classroom Teachers
60 teachers
Student-Teacher Ratio
5:1
National avg.:
% Faculty w/Advanced Degree
25%
Average Class Size
12 students
Number of AP/Advanced Courses
2 courses
List of Courses Offered
AP/Advanced Courses
AP Computer Science PrinciplesAP Precalculus
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
None / Rolling
Yearly Tuition Cost
$88,385
Tuition Notes
7-Day Domestic Boarding Tuition (Grades 6-9): $88,385
5-Day Domestic Boarding Tuition (Grades 6-9): $82,870
International Boarding Tuition: $95,840
Upper Campus Day (Grades 5-9) Tuition: $47,440
Lower Campus Tuition (Pre-K through Grade 4): $31,250
% on Financial Aid
30%
Average Financial Aid Grant
$17,000
Acceptance Rate
35%
National avg.: 82%
Admissions Director
Charles Brown
Admissions Associate
Ruth Collier
Application URL
Endowment Size
$12 million
Sports
Total Sports Offered
18 sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
33 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
3D PrintingChess Club
Chinese CalligraphyCoding and Design
Community ServiceCooking/Baking
Digital PhotographyFinancial Literacy
Green TeamLego Builders
Literary MagazineLower School Mentor
Math CountsModel UN
NewspaperRobotics
Student CouncilYearbook
Arts and Music Programs:
EnsembleJazz Band
OrchestraPottery
Rock BandStudio Art
Theater
Recreational Athletic Programs:
DanceMountain Biking
Outdoor EducationSkiing/Snowboarding
SoccerTennis
WeightliftingYoga
School Notes
- School Motto: Life Through Service
- School Mascot: Falcon
- 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.
- 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 private students.
What is the acceptance rate of Indian Mountain School?
The acceptance rate of Indian Mountain School is 35%, which is lower than the national average of 71%. Indian Mountain School's acceptance rate is ranked among the top private schools in Connecticut with low acceptance rates.
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 18 interscholastic sports: Alpine Skiing, Baseball, Basketball, Cross Country, Dance, Equestrian, Flag Football, Freestyle Skiing, Golf, Ice Hockey, Lacrosse, Mountain Biking, Soccer, Softball, Squash, Swimming, Tennis and Volleyball. Indian Mountain School is ranked as one of the top 20% of private schools in Connecticut for most sports offered.
What is Indian Mountain School's ranking?
Indian Mountain School ranks among the top 20% of private schools in Connecticut for: Lowest average acceptance rates, Largest student body, Most sports offered, Most extracurriculars offered and Oldest founding date.
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).
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The nearest high school to Indian Mountain School is The Hotchkiss School (1.5 miles away)
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The nearest preschool is Dutchess Day School (15.1 miles away)
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Gr: 9-12 | 627 students Avg. class size: 15 students Sports: 23 Tuition & acceptance rate listed
Kent School ![Kent School Photo]( "Kent School Photo")
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Kent, CT 06757
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Gr: 9-12 | 504 students Avg. class size: 12 students Sports: 17 | Extracurrculars: 65 Tuition & acceptance rate listed
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New Preston Marble Dale, CT 06777
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(860) 868-0535
Washington Depot, CT 06794
(860) 868-0535
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240 Litchfield Tpke
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New Preston Marble Dale, CT 06777
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Hamden, CT 06517
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Miles
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11 Interlaken Road
Lakeville, CT 06039
(860) 435-3102
Lakeville, CT 06039
(860) 435-3102
1.5 miles
Gr: 9-12 | 627 students Avg. class size: 15 students Sports: 23 Tuition & acceptance rate listed
251 Canaan Road
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Salisbury, CT 06068
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Amenia, NY 12501
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Kent School ![Kent School Photo]( "Kent School Photo")
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Kent, CT 06757
(860) 927-6020
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Gr: 9-12 | 504 students Avg. class size: 12 students Sports: 17 | Extracurrculars: 65 Tuition & acceptance rate listed
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Miles
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11 Interlaken Road
Lakeville, CT 06039
(860) 435-3102
Lakeville, CT 06039
(860) 435-3102
1.5 miles
Gr: 9-12 | 627 students Avg. class size: 15 students Sports: 23 Tuition & acceptance rate listed
251 Canaan Road
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(860) 435-5732
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5142 Route 22
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(845) 373-8191
Amenia, NY 12501
(845) 373-8191
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131 Millbrook School Rd
Millbrook, NY 12545
(845) 677-8261
Millbrook, NY 12545
(845) 677-8261
9.6 miles
Gr: 9-12 | 323 students Avg. class size: 11 students Sports: 21 | Extracurrculars: 35 Tuition & acceptance rate listed
Kent School ![Kent School Photo]( "Kent School Photo")
(Episcopal)
1 Macedonia Road
Kent, CT 06757
(860) 927-6020
Kent, CT 06757
(860) 927-6020
11.8 miles
Gr: 9-12 | 504 students Avg. class size: 12 students Sports: 17 | Extracurrculars: 65 Tuition & acceptance rate listed
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Location
Miles
Quick Facts
5142 Route 22
Amenia, NY 12501
(845) 373-8191
Amenia, NY 12501
(845) 373-8191
6.5 miles
Gr: 7-12 | 62 students Avg. class size: 6 students Sports: 11 | Extracurrculars: 21 Tuition & acceptance rate listed
37 Shepherds Way
Clinton Corners, NY 12514
(845) 266-3497
Clinton Corners, NY 12514
(845) 266-3497
14.2 miles
Gr: K-12 | 77 students Avg. class size: 11 students Sports: 4 | Extracurrculars: 3 Tuition listed
415 Route 343
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Millbrook, NY 12545
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Location
Miles
Quick Facts
415 Route 343
Millbrook, NY 12545
(845) 677-5014
Millbrook, NY 12545
(845) 677-5014
15.1 miles
Gr: PK-8 | 195 students Sports: 9 | Extracurrculars: 7 Tuition listed
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(413) 528-4015
Great Barrington, MA 01230
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240 Litchfield Tpke
New Preston Marble Dale, CT 06777
(860) 868-0551
New Preston Marble Dale, CT 06777
(860) 868-0551
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Gr: PK-8 | 256 students Avg. class size: 20 students Sports: 7 | Extracurrculars: 2 Tuition listed
201 Romford Rd
Washington Depot, CT 06794
(860) 868-0535
Washington Depot, CT 06794
(860) 868-0535
20 miles
Gr: PK-9 | 328 students Avg. class size: 12 students Sports: 16 Tuition & acceptance rate listed
St. John Paul The Great Stream Academy
(Catholic)
360 Prospect St
Torrington, CT 06790
(860) 489-4177
Torrington, CT 06790
(860) 489-4177
20 miles
Gr: PK-8 | 169 students
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Miles
Quick Facts
(Math: 41% | Reading: 39%)
Rank:
Rank:
4/
Bottom 50%10
110 Stringham Rd
Lagrangeville, NY 12540
(845) 486-4880
Lagrangeville, NY 12540
(845) 486-4880
9457.4 miles
Gr: 6-8 | 817 students Student-Teacher Ratio: 10:1 Minority enrollment: 49%
(Math: 83% | Reading: 59%)
Rank:
Rank:
9/
Top 20%10
1157 Rt 55
Lagrangeville, NY 12540
(845) 486-4860
Lagrangeville, NY 12540
(845) 486-4860
9457.6 miles
Gr: 9-12 | 2,472 students Student-Teacher Ratio: 14:1 Minority enrollment: 43%
(Math: 64% | Reading: 50%)
Rank:
Rank:
7/
Top 50%10
1657 E Noxon Rd
Lagrangeville, NY 12540
(845) 223-8600
Lagrangeville, NY 12540
(845) 223-8600
9458 miles
Gr: 6-8 | 990 students Student-Teacher Ratio: 10:1 Minority enrollment: 35%
(Math: 53% | Reading: 43%)
Rank:
Rank:
5/
Bottom 50%10
1659 E Noxon Rd
Lagrangeville, NY 12540
(845) 223-8030
Lagrangeville, NY 12540
(845) 223-8030
9458 miles
Gr: K-5 | 653 students Student-Teacher Ratio: 11:1 Minority enrollment: 27%
(Math: 42% | Reading: 38%)
Rank:
Rank:
4/
Bottom 50%10
181 West Rd
Pleasant Valley, NY 12569
(845) 635-4310
Pleasant Valley, NY 12569
(845) 635-4310
9458.6 miles
Gr: 3-5 | 354 students Student-Teacher Ratio: 11:1 Minority enrollment: 39%
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