St. Mark's School

25 Marlboro Road
Southborough, MA 01772
St. Mark's School educates young people for lives of leadership and service.
Founded in 1865 as an intentionally small residential community, the School challenges its students to develop their particular analytic and creative capabilities by both inspiring their academic and spiritual curiosity and kindling their passion for discovery.
We value collaboration over self-interest, and we encourage all members of our community to explore their place in the larger world beyond our campus.

Quick Stats (2024)

  • Grades: (Boarding) 9-12
  • Enrollment: 370 students
  • Yearly Tuition (Boarding Students): $67,590
  • Yearly Tuition (Day Students): $53,830
  • Acceptance rate: 29%
  • Average class size: 12 students
  • Application Deadline: Jan. 15
  • Source: Verified school update

Top Rankings

St. Mark's School ranks among the top 20 boarding schools (out of 287 schools) for:

Student Test Scores

School Overview

Definition of Terms | 2023 School Data
St. Mark's School
Boarding School Avg.
School Focus
College Preparatory
College Preparatory
Grades Offered (Boarding)
School Type
Religious Affiliation
Year Founded
Campus Size
250 acres
126 acres

Student Body

370 students
315 students
% Students of Color
% International Students
% Students Boarding
Offers Post-Grad Year

Academics and Faculty

Saturday Classes
Frequency of Saturday Classes
Classroom Dress Code
Classroom and chapel dress codes
Average Class Size
12 students
* National Avg. »18
Student : Teacher Ratio
# of AP / Advanced Courses Offered
ESL Courses Offered
% Faculty with Advanced Degree
Summer Program Offered

Tuition Cost

Endowment Size
$141 million
$27 million
Yearly Tuition
(Boarding Students)
Yearly Tuition
(Day Students)
% Students on Financial Aid
Avg. Financial Aid Grant
Merit Scholarships Offered

Acceptance Rate

Application Deadline
Jan. 15
Jan. 15
SSAT Required
Average Percentile SSAT
Acceptance Rate
Director of Admissions
Anne E. Behnke
Associate Director of Admissions
Elise Morgan

Course Listings

List of Courses Offered

AP / Advanced Courses

# of AP / Advanced Courses Offered
Advanced AB Calculus, Advanced Art History, Advanced BC Calculus, Advanced Biology, Advanced Ceramics, Advanced Chemistry, Advanced Environmental Science, Advanced European History, Advanced French Language and Culture, Advanced German Language and Culture, Advanced Latin Readings, Advanced Music Theory, Advanced Philosophy and Literature, Advanced Physics: Electricity and Magnetism, Advanced Physics: Mechanics, Advanced Physics: Modern Topics in Physics, Advanced Psychology, Advanced Spanish Language and Cultures, Advanced Statistics, Advanced Studio Art, Advanced Topics in Computer Science, Advanced Topics in French Literature, Advanced Topics in German Literature, Advanced Topics in Latin Literature, Advanced Topics in Mathematics, Advanced Topics in Music, Advanced Topics in Spanish Literature, Advanced United States Government and Politics, Advanced United States History, Advanced World History, History Research Fellowship: An Advanced Topics Course in History, STEM Research Fellowship: An Advanced Topics Course in Science



Total Extracurricular Organizations
Club or Organization:
Academic Peer Tutors, Acolytes, Admission Prefects, Admission Tour Guides, After-School Tutoring, Alpine Snowboarding, Alumni Ambassador, Amnesty International Club, Animal Rights Club, Band/Jazz Groups, Black Student Union, BMX Biking, Boys, Brantwood Camp, Calligraphy Club, Chinese Students Association, Christian Students - God Squad, Classics Club, Climate Action Group, D.O.P.E. Sports Club, Debate Club, Diners Club, Electronics Club, Field Sports, Freestyle Skiing, French Club, Gaming, German Club, Girls, Green Team, Honor, House (Dorm) Prefects, Iaido, International Club, Investment Club, IT Club, Jewelry Design, Kayaking / Sea Kayaking, Literary Magazine, Mozaic, Medical Club, Middle Eastern Alliance for Peace, MMA, Opinator--student newspaper, Political and Current Events (PACE), Protection of Animals and Wildlife (PAW), Right Rwanda, River Rafting, Sexual Minorities and Straight Supporters (SMASS), Students for Students, Teach Choate, Teach Music, Tiger Lilies

Arts and Music Programs:
Actor's Guild, Choir, Dance Club, Engineering Club, Freestyle Snowboarding, Handball, Jazz Club

Recreational Athletic Programs:
Badminton Club, Book & Pen Group, Dry-land Training, Fishing Club, Music Instruction, Pep and Marching Band, Theater Dance & Music

College Matriculation

Year: 2006 - 2012
10 Most Popular College Choices  (# Enrolled)
Boston College
George Washington University
Colby College
Tufts University
Trinity College
Boston University
Georgetown University
Bucknell University
Middlebury College

School Notes

  • Founded in 1865, St. Mark's School educates young people for lives of leadership and service, challenging students to take charge of their education, inspiring their academic and spiritual curiosity, and kindling their passion for discovery.
  • We have crafted an intentionally small community with the specific goal of encouraging close relationships between faculty and students that gives our students courage to stretch, to dream big, and think beyond themselves.Innovation and tradition are part of our educational DNA.
  • The "school under one roof" design of our main building, an outstanding academic program that combines traditional classroom techniques with experiential learning,  a culture that stresses social justice and global perspective, and an athletic program designed to challenge both college-bound athletes and those seeking fitness alone, all come together to create a robust environment unique to St. Mark`s. Graduates leave St. Mark`s ready to live lives of consequence in the 21st century.
  • St. Mark's School accreditations: NEASC
  • Sample of notable school alumni/alumnae:
    • Ben Bradlee - Former editor, The Washington Post
    • Tarah Donoghue - Former Deputy Press Secretary to Laura Bush, First Lady of the United States from May 2006 to August 2007; worked for former Vice President Dick Cheney
    • Thomas Kean - Former New Jersey governor; former chairman of the 9/11 Commission; former president of Drew University
    • Julie Kennedy - Founder and leader of AMERICA SCORES; President of the Mycelium Group
    • Suzanne P. King - US Olympic cross country skier, 1994 and 1998 Olympic games
    • Robert Lowell - Former sixth Poet Laureate Consultant in Poetry to the Library of Congress; Pulitzer Prize recipient; National Book Award recipient; National Book Critics Circle Award recipient
    • Ashley Merriman - Premier Chef at Branzino in Seattle, WA; former contestant on Top Chef Season 6
    • Storey Musgrave - Astronaut
    • Georgia Chaffee Nassikas - Artist
    • Scott Young - Retired American professional ice hockey right winger; First round draft pick, 11th overall in 1986 by Hartford Whalers; played on the U.S. National Team; played on three Winter Olympic teams 1988, 1992, and 2002; won 2 Stanley Cups in 1991 and 1996
Source: Verified school update

Frequently Asked Questions

How much does St. Mark's School cost?
St. Mark's School's tuition is approximately $67,590 for boarding students and $53,830 for day students.
What schools are St. Mark's School often compared to?
St. Mark's Schoolis often viewed alongside schools like Deerfield Academy, Middlesex School, Phillips Academy Andover by visitors of our site.
What is the acceptance rate of St. Mark's School?
The acceptance rate of St. Mark's School is 29%, which is lower than the boarding school average of 60%.
Who are famous alumni from St. Mark's School?
St. Mark's School famous alumni include: Ben Bradlee, Tarah Donoghue, Thomas Kean, Julie Kennedy, Suzanne P. King, Robert Lowell, Ashley Merriman, Storey Musgrave, Georgia Chaffee Nassikas and Scott Young.
What sports does St. Mark's School offer?
St. Mark's School offers 14 interscholastic sports: Baseball, Basketball, Crew, Cross Country, Field Hockey, Football, Golf, Ice Hockey, Lacrosse, Soccer, Softball, Squash, Tennis and Wrestling.
What is St. Mark's School's ranking?
St. Mark's School ranks among the top 20 boarding schools for Highest endowment/student, Most extracurriculars offered, High # of AP/advanced courses offered and High SSAT scores.
When is the application deadline for St. Mark's School?
The application deadline for St. Mark's School is Jan. 15.

Alumni Reviews Review School


Class of 2011
Phillips Andover (Post Graduate)
The school's layout makes for quite a unique and homey atmosphere. All classes are located in the main building, and the building itself is centered around Forbes, the student center. The main building also houses. . .

Class of 2004
The George Washington University
Several things set St. Mark's apart from other schools, the main factor being the close proximity of students and faculty members. Nicknamed "the school under one roof," St. Mark's houses the entire academic day. . .

Class of 2010
Bates College
St. Mark's is extremely community based, and I believe it has made both students and faculty proud to be a member of this school. Because a majority of the school functions within one or two. . .
Show more reviews (4 reviews)
Submit Review for St. Mark's School
Earn $20 by submitting your alumni review!

Recent Articles

10 Things You Must Not Forget When Applying
10 Things You Must Not Forget When Applying
There's a lot involved in selecting the right boarding school. Don't forget these ten important things when you apply.
5 More Founders and the Schools Their Gifts Established
5 More Founders and the Schools Their Gifts Established
Vision. Generosity. High-minded principles. These are the hallmarks of the benefactors of the five schools featured in this article.
5 More Schools and Their Founders
5 More Schools and Their Founders
A private school in its infancy is quite different from the mature community it becomes over time. I wonder what the founders of these five schools would think about them today. I bet they would be very proud of their creations.

Featured Schools

Quick Stats (2024)

  • Grades: (Boarding) 9-12
  • Enrollment: 370 students
  • Yearly Tuition (Boarding Students): $67,590
  • Yearly Tuition (Day Students): $53,830
  • Acceptance rate: 29%
  • Average class size: 12 students
  • Application Deadline: Jan. 15
  • Source: Verified school update

Request Information

Quick Links