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 (Boarding 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 279 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%
25%
% International Students
14%
21%
% Students Boarding
70%
67%
Offers Post-Grad Year
No
No
Academics and Faculty
Saturday Classes
Yes
No
Frequency of Saturday Classes
Bi-Weekly
Weekly
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
(Boarding Students)
(Boarding Students)
$79,200
(No additional fees)
(No additional fees)
$66,920
Yearly Tuition
(Day Students)
(Day Students)
$64,350
(No additional fees)
(No additional fees)
$35,900
% Students on Financial Aid
34%
39%
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 Acting, Advanced Astronomy, Advanced Data Structures, Advanced French--The Francophone World, Advanced Greek Literature, Advanced Photography, Advanced Studies in Latin Literature, Advanced Studies in Latin Poetry, Advanced Studio Projects, Advanced Topics in Computer Science, Afro-American History, AP Art History , AP Biology, AP Calculus AB, AP Calculus BC, AP Chemistry, AP Chinese, AP Computer Science, AP English Literature, AP Environmental Studies, AP European History, AP French Language, AP Government and Politics, AP Latin ( Vergil), AP Macroeconomics, AP Microeconomics, AP Music Theory, AP Physics 1, AP Physics 2, AP Physics C, AP Spanish Language, AP Spanish Literature, AP Statistics, AP Studio Art, AP U.S. History, Art and Life in Nineteenth-Century France, British Romantic Literature, Engineering, Era of the American Civil War, Fantasy Literature in English, Fiction Writing, Forms of Poetry, Global. Studies, History of Dissent, Jane Austen, Modern American Poetry, Multivariable Calculus, Narratives of Nationhood, Nature Writing: Thoreau and Emerson, Postcolonial Literature, Seminar in Advanced Computer Science, Seminar in Advanced Mathematics, Studies in Medieval Literature, The American Romantic Tradition, The Harlem Renaissance, The Hero in 20th Century Literature, The Novel after Modernism, The Personal Essay, Utopias and Dystopias, Vector Calculus, War and Reconciliation
Sports
# Interscholastic Sports Offered
21
16
Extracurriculars
Total Extracurricular Organizations
79
23
Extracurriculars
Club or Organization:
AI (Artificial Intelligence) Club, AI Club, Astronomy Club, Baking club, Book Lovers’ Club, Botany Club, Boys with Books, Bring Change to Mind, Campuses Against Cancer, Cards for Kids, Catan club, Chess Club, Classical Music Club, Classics Club, Classics club, Common sense, Computer Programming Club, Creative Writing Club, Crossword Club, Debate Club, Economics Club, Esports, Farming, FemX, Finance club, Fishing Club, Focus, Formula One, French Club, Friendship bracelet club, Gazebo Skating Club, German Club, Girls with Gains, GSA (Gender and Sexuality Alliance), Harry Potter Club, Improv Club, International Club Food Club, Intersectionality Club, Jewish Student Union, Knitting Club, Language Tutoring, Makers Club, Marine Biology Club, Math Club, Medical Club, Mindfulness (Morning Mindfulness), Mountain Bike Club, MX DNA, MX Music Festival, MX Yoga Club, MXSpike (Spikeball Club), Not Dead Yet Poets Society, Nutrition Club, Outside Club, Painting Club, Peace of Mind, Percussion Club, Photo Club, Photography Club, Physics Club, Ping Pong Club, Politics Club, Real Estate Investment Club, Road Cycling Club, Robotics, Rubiks Cube, Screenwriting Club, Sense for Humanity, Spanish Club, Sports Analytics Club, Star Wars Club, Studio Art Club, Tea Club, The Anvil, The Iris, Video Production Club, Volunteer for Veterans, Weightlifting, Writing for Social Justice and Change
AI (Artificial Intelligence) Club, AI Club, Astronomy Club, Baking club, Book Lovers’ Club, Botany Club, Boys with Books, Bring Change to Mind, Campuses Against Cancer, Cards for Kids, Catan club, Chess Club, Classical Music Club, Classics Club, Classics club, Common sense, Computer Programming Club, Creative Writing Club, Crossword Club, Debate Club, Economics Club, Esports, Farming, FemX, Finance club, Fishing Club, Focus, Formula One, French Club, Friendship bracelet club, Gazebo Skating Club, German Club, Girls with Gains, GSA (Gender and Sexuality Alliance), Harry Potter Club, Improv Club, International Club Food Club, Intersectionality Club, Jewish Student Union, Knitting Club, Language Tutoring, Makers Club, Marine Biology Club, Math Club, Medical Club, Mindfulness (Morning Mindfulness), Mountain Bike Club, MX DNA, MX Music Festival, MX Yoga Club, MXSpike (Spikeball Club), Not Dead Yet Poets Society, Nutrition Club, Outside Club, Painting Club, Peace of Mind, Percussion Club, Photo Club, Photography Club, Physics Club, Ping Pong Club, Politics Club, Real Estate Investment Club, Road Cycling Club, Robotics, Rubiks Cube, Screenwriting Club, Sense for Humanity, Spanish Club, Sports Analytics Club, Star Wars Club, Studio Art Club, Tea Club, The Anvil, The Iris, Video Production Club, Volunteer for Veterans, Weightlifting, 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
- School Motto: Find the promise that lies hidden in every student.
- 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
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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