Quick Facts (2026-27)
- Top Ranked MA School
- Grades: 9-12
- Enrollment: 164 students
- Yearly Tuition: $62,780
- Average class size: 9 students
- Application Deadline: Jan. 15
- Source: ✓Verified school update
Commonwealth School
Quick Facts (2026-27)
- Top Ranked MA School
- Grades: 9-12
- Enrollment: 164 students
- Yearly Tuition: $62,780
- Average class size: 9 students
- Application Deadline: Jan. 15
- Source: ✓Verified school update
School Rankings
Commonwealth School ranks among the top 20% of private schools in Massachusetts for:
Category
Attribute
SAT Score
Diversity
Extra-curric.
School Facts
Religious Affiliation
Grades Offered
Grades 9-12
Students By Grade
Year Founded
1957
Summer School Offered
Yes
Summer Program Details
School Calendar
Last Day of School
Wed. Jun 9, 2027
Student Body
Total Students
164 students
Student Body Type
Co-ed
% Students of Color
62%
State avg.: 31%
Academic Profile
Total Classroom Teachers
42 teachers
Student-Teacher Ratio
4:1
National avg.:
% Faculty w/Advanced Degree
89%
Average Class Size
9 students
Average SAT score
1472
(Out of 1600)
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Number of AP Courses
16 courses
List of Courses Offered
Advanced Courses
BiologyCalculus 1
Calculus 1 AdvancedCalculus 2
ChemistryComputer Science
EconomicsEnglish
FrenchLatin
Modern European HistoryMultivariable Calculus
Music TheoryPhysics 1
Physics 2Spanish
StatisticsTheoretical Calculus
United States History
School Membership(s)School Assoc.
Tuition & Financial Aid
Admission Deadline
Jan. 15
Yearly Tuition Cost
$62,780
Tuition Notes
If cost is a concern, know that Commonwealth was founded with accessibility in mind, and we extend more than $2.1 million in financial aid to families every year. We also ensure every student can access every opportunity Commonwealth has to offer, including transportation, technology, and travel. We view financial aid as a partnership, and we welcome conversations with families about affording a Commonwealth education.
Average Financial Aid Grant
$46,884
College Acceptance Rate
100%
Admissions Director
Carrie Healy
Admissions Associate
Natasha Matthews
Application URL
Endowment Size
$21.6 million
Sports
Total Sports Offered
9 sports
School Mascot
Mermaid
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
45 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
Asian Pacific Peoples Affinity Group (APPA)Chess Team
Coding ClubCommonwealth Cares (community service)
COMMunity (social event planning)Cooking Club
Debate TeamDrawing and Animation Club
Dungeons and Dragons ClubEngineering Club
Environmental ClubEvil Genius Club
F1 ClubFAM (Black/African American Affinity Group)
Film ClubFLI Group
Football ClubFrench Club
Game ClubGender-Sexuality Alliance
Go ClubHistory Club
Investment ClubKFC (Krochet for Community)
Knitting CultLatino Affinity Group
Literary Magazine (Helicon)Math Team
MENACE ClubModel Congress
Model UNNewspaper
Philosophy ClubPolitics Club
Quiz BowlRobotics Club
Science TeamSCREAM Club
Speech ClubThe Leek (satire magazine)
Yearbook
Arts and Music Programs:
Jazz EnsembleOrchestra
Recreational Athletic Programs:
FitnessYoga
School Notes
- Perennially recognized as one of the region's premier independent high schools, Commonwealth feels something like a college and something like a home.
- Challenged by thought-provoking curriculum, supported by outstanding faculty, and inspired by our generous community hailing from diverse backgrounds, Commonwealth students share the excitement of inquiry and graduate poised to succeed at the best colleges and beyond.
- to see why Commonwealth is right for you..
- Commonwealth School is a private co-ed high school for grades 912 dedicated to adventurous intellectual and artistic exploration, a place where creativity and individuality flourish. Commonwealth students take full advantage of Boston's resources to pursue scholarly research, independent projects, and community service. Commonwealth`s academic curriculum is rooted in rigorous analysis, focused attention, discussion, and inquiry.
- Faculty work closely with students to explore their personal interests, develop problem-solving skills, and boost their confidence. Examples of college-level electives include Multivariable Calculus, Axiomatic Set Theory, Advanced Topics in Neuroscience, and Shakespeare and the Fairy Tale.
- Commonwealth's roughly 160 studentscome from more than 40 communities around Boston. They discover their passions, pursue new challenges, and grow into thoughtful and inquisitive young adults who thrive and excel in college, career, and life.
- Sample of notable school alumni/alumnae:
- David Altshuler '82 - Geneticist and co-founder of MIT's Broad Institute
- Peter W. Galbraith '69 - Diplomat
- Susanna Kaysen '66 - Author
- Kasi Lemmons '77 - Director
- Hamish Linklater '94 - Actor
- Ottessa Moshfegh '98 - Author
- Cornelia (Nina) Pillard '78 - United States Circuit Judge of the United States Court of Appeals for the District of Columbia Circuit
Source: Verified school update
Frequently Asked Questions
How much does Commonwealth School cost?
Commonwealth School's tuition is approximately $62,780 for private students.
Who are famous alumni from Commonwealth School?
Commonwealth School famous alumni include: David Altshuler '82, Peter W. Galbraith '69, Susanna Kaysen '66, Kasi Lemmons '77, Hamish Linklater '94, Ottessa Moshfegh '98 and Cornelia (Nina) Pillard '78.
Does Commonwealth School offer a summer program?
Yes, Commonwealth School offers a summer program. Visit their for more information.
What sports does Commonwealth School offer?
Commonwealth School offers 9 interscholastic sports: Basketball, Climbing, Cross Country, Fencing, Sailing, Soccer, Squash, Ultimate Frisbee and Volleyball.
What is Commonwealth School's ranking?
Commonwealth School ranks among the top 20% of private schools in Massachusetts for: Highest average SAT score, Highest percentage of students of color and Most extracurriculars offered.
When is the application deadline for Commonwealth School?
The application deadline for Commonwealth School is Jan. 15.
In what neighborhood is Commonwealth School located?
Commonwealth School is located in the Back Bay neighborhood of Boston, MA. There are 4 other private schools located in Back Bay.
Related Schools
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People that viewed Commonwealth School also viewed these schools: The Newman School, Boston University Academy, Buckingham Browne & Nichols School, Milton Academy and Beaver Country Day School.
The nearest high school to Commonwealth School is The Newman School (0.2 miles away)
The nearest elementary school and preschool is Kingsley Montessori School (0.1 miles away)
Show me:
Show me:
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 1.6 mi
Gr: 9-12 | 233 students
Avg. class size: 12 students
Sports: 18 | Extracurriculars: 22
Specialized Curriculum
One University Road
Boston, MA 02215
(617) 353-9000
Distance: 3.2 mi
Gr: PK-12 | 1,044 students
Avg. class size: 15 students
Sports: 19 | Extracurriculars: 68
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Distance: 6.6 mi
Gr: K-12 | 1,020 students
Avg. class size: 14 students
Sports: 19 | Extracurriculars: 56
170 Centre Street
Milton, MA 02186
(617) 898-1798
Distance: 4.8 mi
Gr: 6-12 | 490 students
Avg. class size: 16 students
Sports: 17
791 Hammond St
Chestnut Hill, MA 02467
(617) 738-2725
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 1.6 mi
Gr: 9-12 | 233 students
Avg. class size: 12 students
Sports: 18 | Extracurriculars: 22
Specialized Curriculum
One University Road
Boston, MA 02215
(617) 353-9000
Distance: 3.2 mi
Gr: PK-12 | 1,044 students
Avg. class size: 15 students
Sports: 19 | Extracurriculars: 68
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Distance: 6.6 mi
Gr: K-12 | 1,020 students
Avg. class size: 14 students
Sports: 19 | Extracurriculars: 56
170 Centre Street
Milton, MA 02186
(617) 898-1798
Distance: 4.8 mi
Gr: 6-12 | 490 students
Avg. class size: 16 students
Sports: 17
791 Hammond St
Chestnut Hill, MA 02467
(617) 738-2725
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 3.2 mi
Gr: PK-12 | 1,044 students
Avg. class size: 15 students
Sports: 19 | Extracurriculars: 68
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Distance: 6.6 mi
Gr: K-12 | 1,020 students
Avg. class size: 14 students
Sports: 19 | Extracurriculars: 56
170 Centre Street
Milton, MA 02186
(617) 898-1798
Distance: 4.8 mi
Gr: 6-12 | 490 students
Avg. class size: 16 students
Sports: 17
791 Hammond St
Chestnut Hill, MA 02467
(617) 738-2725
Distance: 8.2 mi
Gr: 7-12 | 620 students
Avg. class size: 13 students
Sports: 18
10 Campus Drive
Dedham, MA 02026
(781) 320-7271
Distance: 3.2 mi
Gr: PK-12 | 1,044 students
Avg. class size: 15 students
Sports: 19 | Extracurriculars: 68
80 Gerry's Landing Rd
Cambridge, MA 02138
(617) 547-6100
Distance: 4.7 mi
Gr: PK-12 | 404 students
Avg. class size: 12 students
Sports: 10 | Extracurriculars: 23
69 Middlesex Road
Chestnut Hill, MA 02467
(617) 566-7462
Distance: 4.2 mi
Gr: NS-12 | 1,027 students
Sports: 19 | Extracurriculars: 37
20 Newton St
Brookline, MA 02445
(617) 522-5544
Distance: 392.8 mi
Gr: PK-12 | 1,135 students
Avg. class size: 14 students
Sports: 16 | Extracurriculars: 33
Friends
3825 Wisconsin Ave NW
Washington, DC 20016
(202) 537-8100
Distance: 39.5 mi
Gr: NS-12 | 753 students
Avg. class size: 14 students
Sports: 16 | Extracurriculars: 33
Friends
250 Lloyd Ave
Providence, RI 02906
(401) 831-7350
Distance: 0.1 mi
Gr: NS-6 | 301 students
Avg. class size: 17 students
Sports: 14
Montessori School
26 Exeter Street
Boston, MA 02116
(617) 226-4927
Distance: 0.1 mi
Gr: K-6 | 118 students
Avg. class size: 18 students
107 Marlborough Street
Boston, MA 02116
(617) 266-8427
Distance: 0.2 mi
Gr: NS-PK | 54 students
Avg. class size: 13 students
Daycare / Preschool
66 Marlborough St
Boston, MA 02116
(617) 267-7159
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 0.2 mi
Gr: 7-12 | 235 students
247 Marlborough St
Boston, MA 02116
(603) 381-2003
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 0.2 mi
Gr: 7-12 | 235 students
247 Marlborough St
Boston, MA 02116
(603) 381-2003
Distance: 0.9 mi
Gr: 7-12 | 287 students
Sports: 9 | Extracurriculars: 9
Catholic
74 Union Park St
Boston, MA 02118
(617) 542-2325
Distance: 1.5 mi
Gr: 8-12 | 29 students
Special Education School
71 Pearl St
Cambridge, MA 02139
(617) 492-4922
Distance: 1.6 mi
Gr: 9-12 | 233 students
Avg. class size: 12 students
Sports: 18 | Extracurriculars: 22
Specialized Curriculum
One University Road
Boston, MA 02215
(617) 353-9000
Distance: 0.1 mi
Gr: NS-6 | 301 students
Avg. class size: 17 students
Sports: 14
Montessori School
26 Exeter Street
Boston, MA 02116
(617) 226-4927
Distance: 0.1 mi
Gr: K-6 | 118 students
Avg. class size: 18 students
107 Marlborough Street
Boston, MA 02116
(617) 266-8427
Distance: 0.2 mi
Gr: 7-12 | 235 students
247 Marlborough St
Boston, MA 02116
(603) 381-2003
Distance: 0.2 mi
Gr: 7-12 | 258 students
Avg. class size: 12 students
Sports: 8 | Extracurriculars: 16
247 Marlborough Street
Boston, MA 02116
(617) 267-4530
Distance: 0.4 mi
Gr: NS-6 | 224 students
Avg. class size: 12 students
Extracurriculars: 18
67 Brimmer St
Boston, MA 02108
(617) 523-7577
Distance: 0.1 mi
Gr: NS-6 | 301 students
Avg. class size: 17 students
Sports: 14
Montessori School
26 Exeter Street
Boston, MA 02116
(617) 226-4927
Distance: 0.2 mi
Gr: NS-PK | 54 students
Avg. class size: 13 students
Daycare / Preschool
66 Marlborough St
Boston, MA 02116
(617) 267-7159
Distance: 0.4 mi
Gr: NS-6 | 224 students
Avg. class size: 12 students
Extracurriculars: 18
67 Brimmer St
Boston, MA 02108
(617) 523-7577
Distance: 0.5 mi
Gr: PK-6 | 129 students
Avg. class size: 13 students
Sports: 6 | Extracurriculars: 20
Alternative School
15 Brimmer Street
Boston, MA 02108
(617) 742-0520
Distance: 0.6 mi
Gr: NS | 64 students
Daycare / Preschool
10 Park Plaza Room 3330
Boston, MA 02116
(617) 973-8200
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Miles
Quick Facts
(Math: 36% | Reading: 40%)
Rank:
Rank:
4/
Bottom 50%10
60 Blackstone Street
Bellingham, MA 02019
(508) 966-3761
Bellingham, MA 02019
(508) 966-3761
9464.3 miles
Gr: 8-12 | 740 students Student-Teacher Ratio: 12:1 Minority enrollment: 21%
(Math: 65-69% | Reading: 50-54%)
Rank:
Rank:
8/
Top 30%10
235 Wachusett Street
Franklin, MA 02038
(508) 541-5281
Franklin, MA 02038
(508) 541-5281
9464.7 miles
Gr: K-5 | 309 students Student-Teacher Ratio: 14:1 Minority enrollment: 32%
Charter School
(Math: 58% | Reading: 58%)
Rank:
Rank:
8/
Top 30%10
500 Financial Park
Franklin, MA 02038
(508) 541-3434
Franklin, MA 02038
(508) 541-3434
9465.1 miles
Gr: K-8 | 898 students Student-Teacher Ratio: 12:1 Minority enrollment: 42%
(Math: 72% | Reading: 76%)
Rank:
Rank:
10/
Top 10%10
218 Oak Street
Franklin, MA 02038
(508) 613-1400
Franklin, MA 02038
(508) 613-1400
9465.1 miles
Gr: 9-12 | 1,453 students Student-Teacher Ratio: 15:1 Minority enrollment: 22%
(Math: 49% | Reading: 51%)
Rank:
Rank:
7/
Top 50%10
224 Oak Street
Franklin, MA 02038
(508) 541-6230
Franklin, MA 02038
(508) 541-6230
9465.1 miles
Gr: 6-8 | 407 students Student-Teacher Ratio: 12:1 Minority enrollment: 19%
School Reviews
5 3/5/2020
Commonwealth students receive a distinguished education in a small community, which allows faculty and students to know each other and work closely together. It is akin to an idea lab bringing bright people together from different areas. The kids work hard and graduate, having had the equivalent of colleges` freshman/sophomore education. The campus is not extensive compared to suburban schools, but that does not prevent the school from offering sports, performing arts and other electives. Most students commute, which develops independence and urban savvy, and the school does a good job of introducing students to some cultural and geographical history of the city of Boston. Parents are also engaged through social events and volunteer opportunities. It is a special place.
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Did You Know?
The average private school tuition in Boston, MA is $33,082 for elementary schools and $40,580 for high schools (read more about average private school tuition across the country).
The average acceptance rate in Boston, MA is 67% (read more about average acceptance rates across the country).
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