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 Facts (2026)
- Grades: 9-12
- Enrollment: 377 students
- Yearly Tuition (Boarding Students): $72,930
- Yearly Tuition (Day Students): $58,080
- Acceptance rate: 29%
- Average class size: 11 students
- Application Deadline: Jan. 15
- Source: Verified school update
Top Rankings
St. Mark's School ranks among the top 20 boarding schools (out of 307 schools) for:
Category
Attribute
School Resources
Offering Breadth
Offering Breadth
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
1865
1909
Campus Size
250 acres
125 acres
Colors
White, Blue, Navy Blue
Student Body
Enrollment
377 students
300 students
% Students of Color
35%
25%
% International Students
24%
20%
% Students Boarding
74%
70%
Offers Post-Grad Year
No
No
Academics and Faculty
Saturday Classes
Yes
No
Frequency of Saturday Classes
Weekly
Weekly
Student-Teacher Ratio
5:1
7:1
# of AP / Advanced Courses Offered
26
17
ESL Courses Offered
No
Yes
% Faculty with Advanced Degree
66%
70%
Summer Program Offered
No
Yes
Tuition Cost
Endowment Size
$150 million
$25 million
Yearly Tuition
(Boarding Students)
(Boarding Students)
$72,930
$59,900
Yearly Tuition
(Day Students)
(Day Students)
$58,080
$33,500
% Students on Financial Aid
32%
40%
Avg. Financial Aid Grant
$55,805
$25,000
Merit Scholarships Offered
No
No
Admissions
Application Deadline
Jan. 15
Jan. 15
SSAT Required
Yes
Yes
Average Percentile SSAT
93%
-
Acceptance Rate
29%
58%
Director of Admissions
Anne E. Behnke
Associate Director of Admissions
Elise Morgan
Application URL
AP / Advanced Courses
# of AP / Advanced Courses Offered
26
17
Courses
Advanced AB CalculusAdvanced Art History
Advanced BC CalculusAdvanced Biology
Advanced CeramicsAdvanced Chemistry
Advanced Environmental ScienceAdvanced European History
Advanced French Language and CultureAdvanced German Language and Culture
Advanced Latin ReadingsAdvanced Music Theory
Advanced Philosophy and LiteratureAdvanced Physics: Electricity and Magnetism
Advanced Physics: MechanicsAdvanced Physics: Modern Topics in Physics
Advanced PsychologyAdvanced Spanish Language and Cultures
Advanced StatisticsAdvanced Studio Art
Advanced Topics in Computer ScienceAdvanced Topics in French Literature
Advanced Topics in German LiteratureAdvanced Topics in Latin Literature
Advanced Topics in MathematicsAdvanced Topics in Music
Advanced Topics in Spanish LiteratureAdvanced United States Government and Politics
Advanced United States HistoryAdvanced World History
History Research Fellowship: An Advanced Topics Course in HistorySTEM Research Fellowship: An Advanced Topics Course in Science
Sports
# Interscholastic Sports Offered
14
16
Extracurriculars
Total Extracurricular Organizations
67
23
Extracurriculars
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
Academic Peer TutorsAcolytes
Admission PrefectsAdmission Tour Guides
After-School TutoringAlpine Snowboarding
Alumni AmbassadorAmnesty International Club
Animal Rights ClubBand/Jazz Groups
Black Student UnionBMX Biking
BoysBrantwood Camp
Calligraphy ClubChinese Students Association
Christian Students - God SquadClassics Club
Climate Action GroupD.O.P.E. Sports Club
Debate ClubDiners Club
Electronics ClubField Sports
Freestyle SkiingFrench Club
GamingGerman Club
GirlsGreen Team
HonorHouse (Dorm) Prefects
IaidoInternational Club
Investment ClubIT Club
Jewelry DesignKayaking / Sea Kayaking
Literary MagazineMozaic
Medical ClubMiddle Eastern Alliance for Peace
MMAOpinator--student newspaper
Political and Current Events (PACE)Protection of Animals and Wildlife (PAW)
Right RwandaRiver Rafting
Sexual Minorities and Straight Supporters (SMASS)Students for Students
Teach ChoateTeach Music
Tiger Lilies
Arts and Music Programs:
Recreational Athletic Programs:
Badminton ClubBook & Pen Group
Dry-land TrainingFishing Club
Music InstructionPep and Marching Band
Theater Dance & Music
College Matriculation
10 Most Popular College Choices (# Enrolled)
Boston College
16
George Washington University
15
Colby College
14
Tufts University
14
Trinity College
13
Boston University
11
Georgetown University
10
Bucknell University
8
Middlebury College
8
MIT
7
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
- School Motto: Age Quod Agis
- School Mascot: Winged Lion
Source: Verified school update
Frequently Asked Questions
How much does St. Mark's School cost?
St. Mark's School's tuition is approximately $72,930 for boarding students and $58,080 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 58%.
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
Review
Description
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. . .
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. . .
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)
Related Schools
Show me:
People that viewed St. Mark's School also viewed these schools: Deerfield Academy, Middlesex School, Phillips Academy Andover and St. Paul's School.
The nearest boarding school to St. Mark's School is Fay School (0.3 miles away)
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