Founded in 1901, and located in one of this country's most historic towns, Concord, Massachusetts, Middlesex aspires to help its students "find their promise" through immersion in a rigorous academic program, inclusive extracurricular programs in arts and athletics, and a commitment to service. Middlesex students are exposed to a breadth and depth of opportunities typically found at only a much larger school.
Over 160 classes include five languages, a much emulated Writing Program, and over 50 advanced and AP sections that wil stretch students intellectually as they pursue academic passions.
At Middlesex, everyone engages in cocurricular life, participating in a thriving arts program (including a third of the school performing via vocal, instrumental or dramatic groups) that ofters opportunities for the beginner to high-end artist; similarly, each student participates in athletics, and we have a home for both the elite athlete and those new to team sports.
All of this work takes place in a community strengthened by our shared commitment to five core values: honesty, respect, kindness, gratitude, and courage.
Quick Stats (2025)
- Grades: 9-12
- Enrollment: 427 students
- Yearly Tuition (ÌÇÐÄvlog¹ÙÍø Students): $79,200
- Yearly Tuition (Day Students): $64,350
- Acceptance rate: 16%
- Average class size: 12 students
- Application Deadline: Jan. 15
- Source: Verified school update
Upcoming Events
Top Rankings
Middlesex School ranks among the top 20 boarding schools (out of 278 schools) for:
Category
Attribute
School Resources
School Resources
Selectivity
Offering Breadth
Offering Breadth
Student Test Scores
Student Test Scores
Student Test Scores
School Overview
School Focus
College Preparatory
College Preparatory
Grades Offered
9-12
9-12
School Type
Co-ed
Co-ed
Year Founded
1901
1907
Campus Size
350 acres
125 acres
First Day of School
Mon. Sep 1, 2025
Student Body
Enrollment
427 students
315 students
% Students of Color
44%
26%
% International Students
14%
21%
% Students ÌÇÐÄvlog¹ÙÍø
70%
67%
Average SAT Score
1460
(Out of 1600)
(Out of 1600)
* National Avg. »
Average ACT score
33
(Out of 36)
(Out of 36)
*National Avg. »
Offers Post-Grad Year
No
No
Academics and Faculty
Saturday Classes
Yes
No
Frequency of Saturday Classes
Bi-Weekly
Monthly
Average Class Size
12 students
12
* National Avg. »
Student : Teacher Ratio
5:1
7:1
# of AP / Advanced Courses Offered
61
18
ESL Courses Offered
No
Yes
% Faculty with Advanced Degree
80%
72%
Summer Program Offered
No
Yes
Tuition Cost
Endowment Size
$301.5 million
(Includes Endowment & Long term investments)
(Includes Endowment & Long term investments)
$30 million
Yearly Tuition
(ÌÇÐÄvlog¹ÙÍø Students)
(ÌÇÐÄvlog¹ÙÍø Students)
$79,200
(No additional fees)
(No additional fees)
$68,800
Yearly Tuition
(Day Students)
(Day Students)
$64,350
(No additional fees)
(No additional fees)
$37,000
% Students on Financial Aid
34%
40%
Avg. Financial Aid Grant
$61,000
(Need-based aid)
(Need-based aid)
$25,000
Merit Scholarships Offered
No
No
Admissions
Application Deadline
Jan. 15
Jan. 15
SSAT Required
Yes
Yes
Average Percentile SSAT
85%
-
Acceptance Rate
16%
64%
Director of Admissions
Douglas C. Price
Application URL
AP / Advanced Courses
# of AP / Advanced Courses Offered
61
18
Courses
Advanced Approaches to ActingAdvanced Astronomy
Advanced Data StructuresAdvanced French--The Francophone World
Advanced Greek LiteratureAdvanced Photography
Advanced Studies in Latin LiteratureAdvanced Studies in Latin Poetry
Advanced Studio ProjectsAdvanced Topics in Computer Science
Afro-American HistoryAP Art History
AP BiologyAP Calculus AB
AP Calculus BCAP Chemistry
AP ChineseAP Computer Science
AP English LiteratureAP Environmental Studies
AP European HistoryAP French Language
AP Government and PoliticsAP Latin ( Vergil)
AP MacroeconomicsAP Microeconomics
AP Music TheoryAP Physics 1
AP Physics 2AP Physics C
AP Spanish LanguageAP Spanish Literature
AP StatisticsAP Studio Art
AP U.S. HistoryArt and Life in Nineteenth-Century France
British Romantic LiteratureEngineering
Era of the American Civil WarFantasy Literature in English
Fiction WritingForms of Poetry
Global. StudiesHistory of Dissent
Jane AustenModern American Poetry
Multivariable CalculusNarratives of Nationhood
Nature Writing: Thoreau and EmersonPostcolonial Literature
Seminar in Advanced Computer ScienceSeminar in Advanced Mathematics
Studies in Medieval LiteratureThe American Romantic Tradition
The Harlem RenaissanceThe Hero in 20th Century Literature
The Novel after ModernismThe Personal Essay
Utopias and DystopiasVector Calculus
War and Reconciliation
Sports
# Interscholastic Sports Offered
21
16
Extracurriculars
Total Extracurricular Organizations
79
23
Extracurriculars
Club or Organization:
AI (Artificial Intelligence) ClubAI Club
Book Lovers’ ClubBotany Club
Boys with BooksBring Change to Mind
Campuses Against CancerCards for Kids
Catan clubChess Club
Classical Music ClubClassics Club
Classics clubCommon sense
Computer Programming ClubCreative Writing Club
Crossword ClubDebate Club
FarmingFemX
FocusFormula One
French ClubFriendship bracelet club
Gazebo Skating ClubGerman Club
Girls with GainsGSA (Gender and Sexuality Alliance)
Harry Potter ClubImprov Club
International Club Food ClubIntersectionality Club
Language TutoringMakers Club
Marine Biology ClubMath Club
Medical ClubMindfulness (Morning Mindfulness)
Mountain Bike ClubMX DNA
MX Music FestivalMX Yoga Club
MXSpike (Spikeball Club)Not Dead Yet Poets Society
Nutrition ClubOutside Club
Painting ClubPeace of Mind
Percussion ClubPhoto Club
Ping Pong ClubPolitics Club
Real Estate Investment ClubRoad Cycling Club
RoboticsRubiks Cube
Screenwriting ClubSense for Humanity
Spanish ClubSports Analytics Club
Star Wars ClubStudio Art Club
Tea ClubThe Anvil
The IrisVideo Production Club
Volunteer for VeteransWeightlifting
Writing for Social Justice and Change
College Matriculation
Year: 2020 - 2024
10 Most Popular College Choices (# Enrolled)
University of Chicago
30
Boston College
17
Harvard University
17
Colby College
16
Trinity College
16
Brown University
14
University of St. Andrew's
13
Tufts University
12
Bowdoin College
11
Dartmouth College
11
School Notes
- Middlesex School Mission and History
- Frederick Winsor wanted the school he founded in 1901 to be distinct from the church-affiliated boarding schools of the time, and from its beginnings, Middlesex School has occupied a unique place in the independent school landscape. It is a non-sectarian School with a positive sense of tradition and mission. It is a school with small-school intimacy and big-school opportunity, a school that early on sought students from every part of the country through a National Scholarship Program. As it has grown, Middlesex has broadened its national and international reach while always benefiting from its local surroundings-the human and cultural capital of the Boston/Cambridge area. Middlesex School, both in the present and in the past, has preferred capacity in many areas to specialization in one. We believe a transparent and familiar community is an ethical community. We believe in our students. From the start, Winsor`s mission was to "find the promise that lies hidden" in every student, and that message of individuality, hope, and possibility guides us today. Our campus, designed by the Olmsted Brothers firm, remains centered on its iconic circle. We are fortunate to live in a beautiful setting that naturally brings our paths and our lives together. Radiating from a common sense of place and purpose, Middlesex continues to prepare its students for a changing world. We have evolved in many ways since our founding over a century ago. We have undergone renovation, conservation, expansion, and constant transition in person and place. Yet our buildings, our fields, our programs, and our ethos still cleave to a human scale fostering collegiality and contact. Despite the school`s continuous transformation, our mission, with our students at the center, remains the same.
- Middlesex School accreditations: New England Association of Schools and Colleges (NEASC)
- Sample of notable school alumni/alumnae:
- Steve Carell - Actor
- Kevin Systrom - Co-founder of Instagram
- Sarah Leary - Cofounder of Nextdoor
- William Hurt - Academy Award Winning Actor
- Anthony Lake - Executive Director, Unicef
- Li Chung Pei - Architect
- Cass Sunstein - Head of the Office of Information and Regulatory Affairs
- Sarah Leary - Co-Founder of Nextdoor
- Martin Hoffman - US Secretary of the Army
- Joseph Kahn - Managing Editor, The New York Times
- School Motto: Find the promise that lies hidden in every student.
Source: Verified school update
Frequently Asked Questions
How much does Middlesex School cost?
Middlesex School's tuition is approximately $79,200 for boarding students and $64,350 for day students.
What schools are Middlesex School often compared to?
Middlesex Schoolis often viewed alongside schools like Deerfield Academy, Phillips Academy Andover, Choate Rosemary Hall by visitors of our site.
What is the acceptance rate of Middlesex School?
The acceptance rate of Middlesex School is 16%, which is lower than the boarding school average of 64%. Middlesex School's acceptance rate is ranked as one of the top boarding schools with low acceptance rates.
Who are famous alumni from Middlesex School?
Middlesex School famous alumni include: Steve Carell, Kevin Systrom, Sarah Leary, William Hurt, Anthony Lake, Li Chung Pei, Cass Sunstein, Sarah Leary, Martin Hoffman and Joseph Kahn.
What sports does Middlesex School offer?
Middlesex School offers 21 interscholastic sports: Alpine Skiing, Baseball, Basketball, Crew, Cross Country, Cross Country Running, Dance, Field Hockey, Football, Golf, Ice Hockey, Lacrosse, Nordic Skiing, Soccer, Softball, Squash, Tennis, Track and Field, Ultimate Frisbee, Volleyball and Wrestling.
What is Middlesex School's ranking?
Middlesex School ranks among the top 20 boarding schools for Large financial endowment, Highest endowment/student, Low acceptance rates, Most extracurriculars offered, High # of AP/advanced courses offered, High average SAT scores, High SSAT scores and High ACT scores.
When is the application deadline for Middlesex School?
The application deadline for Middlesex School is Jan. 15.
Alumni Reviews Review School
Review
Description
Middlesex is probably the boarding school that is far ahead in terms of student body diversity, and I mean that in a very good way. Between geographical and socioeconomic diversity, you really learn a ton. . .
Great level of focus on developing clear and cohesive writing skills. Write countless essays and spend time working on the technicalities that improve your ability. Great long-standing traditions. We have a beautiful circle that allows. . .
The entire experience was not only unique, it was life changing! It opened my eyes and mind up to world I wasn't familiar with. I was able to meet, connect and bond with students from. . .
Show more reviews (26 reviews)
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People that viewed Middlesex School also viewed these schools: Deerfield Academy, Phillips Academy Andover, Choate Rosemary Hall, Phillips Exeter Academy and Milton Academy.
The nearest boarding school to Middlesex School is The Cambridge School of Weston (9.2 miles away)
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