Uncommon Community

Uncommon Curiosity

Uncommon Opportunity

Commonwealth is a co-ed independent day school welcoming curious, highly motivated students in grades 9–12. Our close-knit community thrives on making meaningful intellectual and personal connections, while tapping into the opportunities surrounding our home in Boston’s Back Bay.

Meet Faculty and Students

Commonwealth taught me how to interact with different people, and I think I've learned a lot of skills regarding meeting new people.  It's having that safe space, where I can make myself uncomfortable, but I also have my advisor and I have friends who support me. 

Avery '23

It is humbling and exhilarating to come to work every day to a place where people are working for a common goal with such a mix of competence and humanity.

César Pérez, History, Languages


I was first interested in Commonwealth by the small class sizes and the very rigorous environment. Visiting and having a virtual class was what drew me in. I'm very happy about making the choice to come here. The classes are intriguing, to say the least. There is difficulty but nothing I can’t handle. And the opportunities, such as Project Week, are unique, and they allow us to develop our own interests.

Aritra ’25


My students teach me so much that each subsequent year the course is informed by their insights.

Melissa Glenn Haber '87, History

I get a real burst of energy when I’m able to help students navigate the complexities of the research process. I feel so lucky to have such an incredible patron base of high-level readers and thinkers in our students. 

Jake MacDonnell, Librarian and Registrar

Classes have been absolutely amazing. The teachers here really care about what they’re teaching, and that makes all the difference.

Olivia ’24

I love the campus, too—you know, Boston is the campus in a sense. That’s what they told us when we visited, and that’s really been delivered. You can just hop on the T at Copley or at Back Bay and go anywhere. I can walk across a bridge over the Charles River and be at MIT or Kendall Square, or walk a few blocks and be in Beacon Hill. I think it's just so rewarding to have that freedom.

Romen ’23

By the Numbers


students in grades 9-12


students of color

$1.5 million

financial aid granted for 2022–2023


teachers holding advanced degree


student-to-faculty ratio


all-school trips each year


median SAT composite score (Class of 2022)

Happening Now


Having moved from ​​Saratoga Springs, New York, to Boston for Commonwealth, Hanna appreciates tea in the evenings, exercise classes with her sister, and a good mechanical pencil. She also deeply appreciates her Arab Muslim culture and has introduced the Commonwealth community to its beauties.

Commonwealth School biology teacher Eva Earnest, wearing a tan jacket and black shirt, stands smiling next to a microscope.

Biology teacher Eva Earnest has studied many forms of life, but for her, people and their perspectives may be the most fascinating of all. Meet this longtime Massachusetts resident and discover what led her to Commonwealth—and the topic that made her fall in love with biology.

Commonwealth math and physics teacher Anna Moss stands in front of a pink cherry blossom tree, wearing a matching sweater.

Traveling to Costa Rica and Jordan; studying art alongside professors; practicing Spanish in New Mexico: physics and math teacher Anna Moss's years studying at Commonwealth (Class of 2006) were filled with uncommon experiential learning. As the deadline for 2023 project proposals approaches, she shares six tips drawn from her Project Week work as a student and coordinator. 

At Commonwealth, we’re looking for inquisitive, driven, and creative students from a wide range of backgrounds. We encourage you to visit us, talk with teachers and students, and see if Commonwealth is right for you.