Marlborough School

What Marlborough School does

Marlborough School is a private, independent, all-girls college-preparatory day school located at 250 South Rossmore Avenue in Los Angeles, California. Founded in 1889 by Mary Caswell and operating as a non-profit foundation since 1962, it serves 530 students in Grades 7 through 12 drawn from over 100 zip codes across the greater Los Angeles area. It is the oldest independent girls' school in Southern California and maintains a 7:1 student-to-faculty ratio with 80% of faculty holding advanced degrees.

The school's core offering is a holistic college-preparatory curriculum comprising 200+ courses, AP and honors coursework, 11 sports and 33 athletic teams, 90+ student-led clubs, and performing and visual arts programming. It differentiates through five Signature Programs: the Leonetti/O'Connell Honors Research Program, the Global Futures Institute Diploma Program (first-of-its-kind nationally), the nationally ranked Debate program, the award-winning Competitive Robotics program (FIRST Tech Challenge; 3 World Championship awards), and the Frank & Eileen Accelerator Program for the Leaders of Tomorrow (45 student-launched businesses). The Shari and Edward Glazer Center for Entrepreneurship & Innovation (CEI) serves as the interdisciplinary hub housing robotics/fabrication, computer science, research, engineering, entrepreneurship, media studies, and the library. The school's technology footprint is administrative rather than proprietary: Finalsite (website CMS), Ravenna Hub (admissions), Clarity Tuition (financial aid), ADP (HR), and Google Translate (localization).

Marlborough generates revenue primarily through recurring annual tuition of $57,850 for Grades 7-12 (2026-2027), supplemented by a $3,300 New Student Fee, $3,500 Senior Fee, optional round-trip bus service at $4,400, and a $1,600 Bring Your Own Laptop fee. Financial aid is available to approximately 25% of students with awards averaging $37,600 (69% of tuition) for 2025-2026. The admissions process is sales-led and relationship-driven, leveraging the Ravenna Hub inquiry platform, Open Houses, Parent Coffees, and student/alumnae panels to convert Los Angeles-area families. A six-route bus network extends reach across Brentwood/Westside, Valley, Pasadena, Pico, South Bay, and 26th Street, and the school maintains philanthropic revenue channels including the Marlborough Fund, endowment, planned giving, and the Violets' Giving Circle (which has raised $500,000 for Los Angeles organizations). The school does not publicly disclose revenue figures and operates under the fiduciary oversight of its Board of Trustees, currently chaired by Dorothy C. Kim '90.

Name

Marlborough School

Legal name

Marlborough School

Website

https://marlborough.org

Company type

Private

Founded year

1889

Operating status

Operating

Headcount range

51–100 employees

Ownership category

akta.pro rank

Product category

Independent Private Secondary Education

NAICS

Elementary and Secondary Schools (6111), Educational Support Services (611710)

SIC

Services-Educational Services (8200)

akta.pro primary industry

International/Global Curriculum Schools (IB, Cambridge, etc.) (EDAJABAG)

akta.pro secondary industry

Portfolio, Capstone & Project-Based Program Support (EDAMAKAD)

Keywords

• College preparatory education
• Independent girls school
• Secondary education
• All-girls education
• Private day school

Headquarters

HQ city

Los Angeles

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Tuition Revenue: Primary revenue source from tuition payments. 2026-2027 tuition is $57,850 for Grades 7-12. Additional fees include New Student Fee ($3,300) and Senior Fee ($3,500). Optional bus transportation available for $4,400 annually.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Marlborough School is a private, independent, all-girls college-preparatory day school serving approximately 530 students in Grades 7–12 on a 110,000 sq. ft. campus in Los Angeles. It delivers a holistic educational experience through a 200+ course academic curriculum, five signature programs (Honors Research, Global Futures Institute Diploma, Frank & Eileen Accelerator, Competitive Robotics, Debate), comprehensive arts and athletics programs, and student support services including four-year college counseling. The Shari and Edward Glazer Center for Entrepreneurship & Innovation (CEI) serves as the interdisciplinary hub for robotics, fabrication, computer science, research, engineering, entrepreneurship, and media studies.

Product overview

Marlborough School is a private, independent all-girls college-preparatory day school in Los Angeles, CA, serving 530 students in Grades 7–12. Founded in 1889, it is the oldest independent girls' school in Southern California. The school offers a holistic educational experience structured around a rigorous academic curriculum (200+ courses, AP and honors offerings), five Signature Programs (Honors Research, Global Futures Institute, Debate, Competitive Robotics, and the Frank & Eileen Accelerator), a comprehensive arts program (Performing Arts and Visual Arts), and Mustang Athletics (11 sports, 33 teams). The Shari and Edward Glazer Center for Entrepreneurship & Innovation (CEI) serves as the interdisciplinary hub for robotics/fabrication, computer science, research, engineering, entrepreneurship, media studies, and the library, and anchors the school's innovation ecosystem. The school also provides extensive student support including a four-year college counseling program, health and wellbeing services, 90+ student-led clubs, identity-based affinity groups, and an auxiliary bus transportation network serving over 100 zip codes. Financial aid (administered via Clarity Tuition) is available to one in four students, and the ViBEE Fellowship (in partnership with LMU) supports alumnae of color entering the teaching profession. Marlborough's product portfolio is best understood as a unified educational experience rather than discrete software products, with the CEI serving as the central platform for hands-on, interdisciplinary innovation programs.

Differentiator

Problem solved

Functional benefit

Products and services

• Marlborough School Educational Program (Grades 7–12)

Quantifiable outcome

• Class of 2025 matriculated to 55 colleges and universities in 21 states
• +4 more outcomes

Named customers2 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

Partnerships

Seven partnerships are on record, tiered core and secondary.

• Loyola Marymount University School of EducationcoreStrategic or Co-development PartnerViBEE (Violets for Building Equity in Education) Fellowship partnership provides Marlborough alumnae of color with a fully funded pathway into teaching. Fellows co-teach at Marlborough, receive mentorship, and earn a Master of Arts in Educational Studies from LMU at no cost. The program aims to diversify the teaching profession and create representation in classrooms.
• Frank & Eileen (Accelerator Program Donors)coreStrategic or Co-development PartnerFrank & Eileen Accelerator Program for the Leaders of Tomorrow provides tools, mentorship, and funding for students to launch real businesses. The program includes both Incubator and Accelerator pathways with seed funding and pitch showcases. 45 businesses have been created through this program.
• Shari and Edward Glazer (CEI Donors)coreStrategic or Co-development PartnerThe Shari and Edward Glazer Center for Entrepreneurship and Innovation (CEI) serves as the school's idea incubator and interdisciplinary project lab. Named donors support robotics, fabrication, computer science, media, research, and entrepreneurship programs for students.
• Community Partners (12+ organizations)secondaryStrategic or Co-development PartnerStudents partner with 12+ nonprofit and community organizations across Los Angeles for service learning, social justice research, and internship opportunities through the Social Justice and Community Partnerships Department.
• Industry Mentors (Frank & Eileen Accelerator)secondaryStrategic or Co-development PartnerStudents in the Frank & Eileen Accelerator Program refine their ventures with support from industry mentors. Mentors provide business strategy, product development, and financial literacy guidance to student entrepreneurs.
• Southern California Diversity Recruiting FairsecondaryGTM or Marketing PartnerMarlborough is a proud participating school in the annual Southern California Diversity Recruiting Fair, supporting faculty recruitment efforts.
• NAIS People of Color ConferencesecondaryGTM or Marketing PartnerFaculty and staff (Staculty) have the opportunity to attend the NAIS People of Color Conference which provides leadership and professional development for people of color and allies.

Scale indicators12 records

Recent moves13 records

Expansion highlights5 records

Direct peers

• Archer School for Girls: Archer is an independent day school for girls in Grades 6-12 in Los Angeles, directly comparable to Marlborough as a co-equal all-girls college-prep peer in the same city serving the same demographic.
• Westridge School: Westridge is an independent girls' school in Pasadena serving Grades 4-12, the most direct geographic peer to Marlborough within the greater LA private girls' school segment.
• Flintridge Preparatory School: Flintridge Prep is an independent school in La Cañada Flintridge serving Grades 7-12, comparable to Marlborough in college-prep mission, size, and tuition tier within the greater LA region.
• The Spence School: Spence is a top-tier independent day school for girls in Grades K-12 in New York City, broadly comparable to Marlborough as a peer all-girls' college-preparatory school with similar signature programs and outcomes focus.
• The Chapin School: Chapin is an independent day school for girls in Grades K-12 in New York City, directly analogous to Marlborough as a peer in the elite all-girls' college-preparatory segment with similar tuition and program offerings.

Broad incumbents

• Harvard-Westlake School: Harvard-Westlake is a larger co-ed independent school in LA (Grades 7-12) operating with similar college-prep rigor and a comparable tuition level, competing for the same LA family demographic though without the all-girls focus.
• Brentwood School: Brentwood is a co-ed K-12 independent day school on LA's Westside, operating in the same premium private school tier and competing for the same upper-middle-class LA families.
• Polytechnic School: Polytechnic is an independent K-12 day school in Pasadena, comparable in mission, tuition tier, and college-preparatory orientation, drawing from the same greater LA family pool.
• Crossroads School: Crossroads is an independent K-12 school in Santa Monica with a progressive, college-preparatory orientation and similar tuition, comparable to Marlborough as a co-ed LA independent school peer.
• Buckley School: Buckley is an independent K-12 day school in Sherman Oaks (LA), comparable in mission, tuition tier, and college-preparatory focus as a co-ed LA private school peer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubevimeo.com/marlboroughschool
• LinkedInlinkedin.com/login
• Instagraminstagram.com/marlboroughlife
• Xx.com/Marlborough
• Facebookfacebook.com/MarlboroughSchool

Revenue estimate

Valuation estimate

Number of profiles

Profiles12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marlborough School