Indian Mountain School
Indian Mountain School is a nonprofit private junior boarding and day school in Lakeville, Connecticut, serving approximately 200 students from Pre-K through Grade 9 across two campuses, with a 4:1 student-teacher ratio and 25% international enrollment.
- Company typePrivate
- Founded1922
- HeadquartersLakeville, United States
- Headcount101–250
- GTM typeB2C
- OfferingServices
What Indian Mountain School does
Indian Mountain School is a private, nonprofit, coeducational boarding and day school founded in 1922 by Francis Behn Riggs in Lakeville, Connecticut, serving approximately 200 students from Pre-K through Grade 9 across two campuses. The institution operates a 600-acre Upper Campus housing grades 5–9 (including more than 100 boarding students distributed across seven dormitories, 4:1 student-teacher ratio, average class size of 14, 17 sports teams, 40+ clubs, and 16 arts offerings) and a 13-acre Lower Campus for Pre-K through Grade 4 on a nationally certified wildlife habitat. International students comprise 25% of enrollment, drawn from 16 countries. Signature programs include the Ascend literacy support program for dyslexia, Advanced Academic Support, the Outdoor Adventure & Education curriculum, the Poquonook Solutions Project capstone, and the 'This I Believe' speech tradition. Recent capital investments include the Morehead Athletic Center (April 2023), Qianxun Performing Arts Center (January 2025), Dining Commons (2025), and the net-zero Outdoor Working Lab powered by a 400-kilowatt solar array.
Indian Mountain School firmographics
Firmographics- Name
- Indian Mountain School
- Legal name
- Indian Mountain School
- Website
- https://indianmountain.org
- Company type
- Private
- Founded year
- 1922
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Indian Mountain School is a nonprofit private junior boarding and day school in Lakeville, Connecticut, serving approximately 200 students from Pre-K through Grade 9 across two campuses, with a 4:1 student-teacher ratio and 25% international enrollment.
- Ownership category
- akta.pro rank
Indian Mountain School industry classification
Industry- Product category
- Private K-9 Day and Boarding Education
- NAICS
- Elementary and Secondary Schools (6111), Educational Services (61)
- SIC
- Services-Educational Services (8200)
- akta.pro primary industry
- Outdoor Education & Adventure Programs (School-Run) (EDAJAJAJ)
- akta.pro secondary industries
- Outdoor & Wilderness Education Schools (Field-Based Learning) (THAAAOAA), Nature-Based / Forest School Early Learning Programs (EDACADAD), College & Career Exploration Camps (Pre-College Samplers, Pathways) (EDAMALAN)
Keywords
Where Indian Mountain School is headquartered
LocationHeadquarters
- HQ city
- Lakeville
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
Indian Mountain School business model
Business model- GTM type
- B2C
- Offering type
- Services
- Cost components
- Personnel, Operations, Infrastructure, Marketing or Sales, Others
Revenue model
- Tuition and Fees: Primary revenue from tuition payments across multiple programs: 7-day boarding ($88,385), 5-day boarding ($82,870), international boarding ($95,840), upper campus day ($47,440), lower campus ($31,250), plus additional fees for specialized programs (Ascend +$9,375, Academic Support +$13,335).
- Annual Fund and Donations: Annual Fund provides 7% of yearly operating budget. Additional revenue from capital giving, planned giving (Pearson Society), and 1922 Society membership ($1,000+).
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | 7-Day Domestic Boarding (Grades 6-9): $88,385 annually |
| Subscription | Annual | 5-Day Domestic Boarding (Grades 6-9): $82,870 annually |
| Subscription | Annual | International Boarding Tuition: $95,840 annually |
| Subscription | Annual | Upper Campus Day (Grades 5-9): $47,440 annually |
| Subscription | Annual | Lower Campus Tuition (Pre-K through Grade 4): $31,250 annually |
| Subscription | Annual | Ascend Program Add-on: +$9,375 annually |
| Subscription | Annual | Advanced Academic Support Add-on: +$13,335 annually |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Indian Mountain School product offering
Product offeringCore offering
Indian Mountain School delivers tuition-based day and boarding education for students from Pre-K through Grade 9 across two campuses in Lakeville, Connecticut. The school's core offering is a college-preparatory curriculum integrated with outdoor adventure education, residential life, performing arts, athletics, and sustainability programming. Distinct purchases include the Lower Campus Pre-K-Grade 4 day program, Upper Campus Grades 5-9 day program, 5-day and 7-day boarding options, international boarding with TOEFL requirements, the Ascend literacy add-on for students with dyslexia, and seasonal summer enrichment programs.
Product overview
Indian Mountain School is a private junior boarding and day school serving Pre-K through Grade 9 students across two campuses in Lakeville, Connecticut. The school operates as a unified educational program combining core academic instruction with signature experiential programs. The academic offerings include Pre-K through Grade 4 on the Lower Campus and Grades 5-9 on the Upper Campus, both featuring outdoor education integration. Key programs include the Ascend literacy support program, AP Computer Science Principles, Outdoor Adventure & Education (OAE), and comprehensive sustainability curriculum culminating in the Poquonook Solutions Project. The performing arts program operates through dedicated facilities including the new Qianxun Performing Arts Center. Residential programs offer both 7-day and 5-day boarding options for grades 6-9. Summer programs provide seasonal enrichment activities. The school maintains specialized facilities including the net-zero Outdoor Working Lab and Morehead Athletic Center.
Differentiator
Problem solved
Functional benefit
Products and services
- Pre-K – Grade 4 Program Early childhood and elementary day education program for students from Pre-K through Grade 4 on the Lower Campus, situated on a 13-acre nationally certified wildlife habitat. Features emergent curriculum, outdoor learning integration, and the Ascend literacy support program; tuition $31,250 annually.
- Grades 5-9 Program Upper Campus college-preparatory academic program for day and boarding students in grades 5-9, with 4:1 student-teacher ratio, AP courses (including AP Computer Science Principles and AP Precalculus), Outdoor Adventure Education, and secondary school advising. Day student tuition $47,440 annually.
- 7-Day Domestic Boarding (Grades 6-9) Full-immersion residential boarding program for grades 6-9 with evolving weekend programming, seven dormitories, and comprehensive residential life experience; tuition $88,385 annually.
- 5-Day Domestic Boarding (Grades 6-9) Flexible boarding option enabling weekday immersion in the residential community with weekends at home for grades 6-9, with limited availability; tuition $82,870 annually.
- International Boarding Program Residential boarding program for international students with additional support services including English language learning and TOEFL Junior testing requirements; tuition $95,840 annually, with December 15 admissions deadline and Flywire payment processing.
- Ascend Program Literacy support add-on for students in Grades 1-4 with dyslexia and language-based learning differences, using the Orton-Gillingham multisensory approach with 45-minute daily sessions; additional $9,375 annually.
- Summer Programs Seasonal summer enrichment offerings including Basketball Skills, Adventure Theater/Art, Dance Intensive, Tennis Intensive, Moviemaking, Soccer Camp, Magic: The Gathering, Boffer, and Babysitter Bootcamp.
- Secondary School Advising Guidance program including mini-fairs with 80+ schools, admission Q&A panels, interview practice, SSAT preparation, and application support through graduation.
- Qianxun Performing Arts Center State-of-the-art performing arts facility featuring theater, music, dance, and visual arts gallery spaces, opened January 2025, supporting the comprehensive Performing Arts Program.
- Morehead Athletic Center 23,000 square foot athletic facility (opened April 14, 2023) including two basketball courts, fitness center, training rooms, four squash courts, and viewing gallery, supporting 17 competitive sports teams.
- Outdoor Working Lab (OWL) Net-zero 1,500-square-foot outdoor research classroom powered by a 400-Kilowatt solar array with real-time data monitoring, including wet lab, sitting deck, and fire pit for environmental education.
Quantifiable outcome
- 4:1 student-teacher ratio
- +3 more outcomes
Companies that use Indian Mountain School
Customer profileNamed customers4 records
Segments4 records
Ideal customer profiles3 records
Indian Mountain School technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Indian Mountain School partnerships and signals
Strategic signalPartnerships
Eight partnerships are on record, tiered core and minor.
- Sharon PlayhousecoreOngoing partnership with legendary regional theater including classes taught by industry professionals, third and fourth grade plays, and two-term after-school enrichment program called 'Putting on a Show!'
- Hotchkiss SchoolcoreFacility sharing agreement providing access to 2 hockey rinks, swimming pool, additional squash courts, and basketball courts. Students benefit from expanded athletic facilities and competition spaces.
- Millbrook School (Trevor Zoo)minorField trip destination for student visits to Trevor Zoo at Millbrook School; Equestrian facility located at Millbrook NY stables for IMS equestrian team.
- Green School AllianceminorParticipant in Green School Alliance with START Benchmarking Tool for environmental sustainability tracking and improvement.
- Connecticut Science CenterminorField trip destination for Lower Campus students providing hands-on science education experiences.
- Appalachian Mountain ClubminorPartner for outdoor education trips; IMS 9th graders stay at AMC huts (Lonesome Lake Hut and Greenleaf Hut) during White Mountains backpacking trips.
- Metro-North RailroadminorTrain service 12 miles from campus enabling convenient transportation for day students and families; 1.75 hour train ride to NYC.
- FlywireminorInternational student payment processing partner enabling streamlined tuition payments from abroad in multiple currencies with preferential exchange rates.
Scale indicators12 records
Recent moves14 records
Expansion highlights5 records
Indian Mountain School competitors and assessment
Company assessmentEmerging players
- The Kildonan School: Coeducational boarding school in Amenia, NY, specializing in dyslexia and language-based learning differences using Orton-Gillingham methodology. Kildonan is the most direct peer to IMS's Ascend Program, and a prior employer of IMS's Director of Admissions; the two schools compete for the same learning-different student segment.
Broad incumbents
- The Hotchkiss School: Elite coeducational boarding school (Grades 9-12) in Lakeville, CT — the same town as IMS. Hotchkiss shares the destination-school brand and facility-sharing partnership (hockey rinks, squash courts) and is the leading secondary placement target for IMS graduates.
- Kent School: Coeducational boarding school (Grades 9-12) in Kent, CT, with an emphasis on outdoor and mountain-based programming. Kent is a regional destination secondary school and a previous employer of IMS admissions leadership; comparable Connecticut prep school brand.
- Westtown School: Coeducational Quaker boarding and day school (Grades Pre-K-12) in West Chester, PA. Westtown is a comparable East Coast junior/senior boarding model and a prior employer of IMS's Director of Admissions; similar ethical/character-based education orientation.
- Suffield Academy: Coeducational boarding and day school (Grades 9-12) in Suffield, CT, also a destination secondary school for IMS graduates and prior employer of IMS's Director of Financial Aid. Regional peer with comparable tuition and student profile.
Direct peers
- Eaglebrook School: All-boys junior boarding school (Grades 6-9) in Deerfield, MA, with a signature mountain biking, skiing, and outdoor adventure program. Eaglebrook is the closest direct competitor to IMS in junior boarding structure, age range, and emphasis on outdoor/experiential learning for grades 5–9.
- Fay School: Coeducational Pre-K through Grade 9 day and 5-day boarding school in Southborough, MA, with a similar dual-campus model and strong secondary school placement track record. Fay is a head-to-head competitor for New England families evaluating junior boarding/day options.
- Fenn School: Boys' day school (Grades 4-9) in Concord, MA, with signature outdoor and adventure education programs and a 4:1 student-teacher ratio. Fenn is a direct comparable in the junior school/outdoor education category, though day-only.
- Bement School: Coeducational boarding and day school (Grades K-9) in Deerfield, MA, with a small, family-like community similar to IMS. Bement competes for the same junior boarding families in the New England market and has a comparable age span, boarding structure, and secondary school placement focus.
- Millbrook School: Coeducational junior boarding and day school (Grades 9-12) in Millbrook, NY, ~10 miles from IMS. Millbrook shares IMS's experiential, animal- and nature-based pedagogy (Trevor Zoo, Equestrian), rural New York/Connecticut catchment, and partnership-based approach — IMS even uses Millbrook's Trevor Zoo and equestrian facilities.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Indian Mountain School social profiles
Digital presenceIndian Mountain School financial estimates
Financial estimateRevenue estimate
Valuation estimate
Indian Mountain School leadership team
Management profileNumber of profiles
Profiles9 records
Indian Mountain School funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Indian Mountain School M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Indian Mountain School
What does Indian Mountain School do?
Indian Mountain School delivers tuition-based day and boarding education for students from Pre-K through Grade 9 across two campuses in Lakeville, Connecticut. The school's core offering is a college-preparatory curriculum integrated with outdoor adventure education, residential life, performing arts, athletics, and sustainability programming. Distinct purchases include the Lower Campus Pre-K-Grade 4 day program, Upper Campus Grades 5-9 day program, 5-day and 7-day boarding options, international boarding with TOEFL requirements, the Ascend literacy add-on for students with dyslexia, and seasonal summer enrichment programs.
Is Indian Mountain School a public or private company?
Indian Mountain School is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was Indian Mountain School founded?
Indian Mountain School was founded in 1922. It employs 101 to 250 people.
Where is Indian Mountain School based?
Indian Mountain School is headquartered in Lakeville, United States, in the North America region.
How does Indian Mountain School make money?
Two revenue lines are on record. Tuition and Fees are the primary driver. The others are annual Fund and Donations.
Who are Indian Mountain School's main competitors?
The Kildonan School is listed as an emerging player. Broad incumbents are The Hotchkiss School, Kent School, Westtown School and Suffield Academy. Direct peers are Eaglebrook School, Fay School, Fenn School, Bement School and Millbrook School.
Does Indian Mountain School have an API?
No public API is recorded for Indian Mountain School.
What industry is Indian Mountain School in?
Indian Mountain School's product category is Private K-9 Day and Boarding Education. Its primary akta.pro industry code is EDAJAJAJ, Outdoor Education & Adventure Programs (School-Run), with a secondary code of THAAAOAA, Outdoor & Wilderness Education Schools (Field-Based Learning). Its NAICS code is 6111 and its SIC code is 8200.