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


I've never seen a school like it before, from the building to the close-knit community. I look forward to going to school everyday, as I never know what will happen next.   

Hanna '25

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 and Languages Teacher


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

Melissa Glenn Haber teaching

Really exciting classrooms are where the student is part of the circuit and the electricity is jumping between them and the sources and the teacher. At the beginning of the Enlightenment unit, instead of saying, “This is what the Enlightenment is.” We say, “Here's Newton's laws of natural philosophy. Here's a poem about sinful bees. Here’s a little Montesquieu with a little Benjamin Franklin and a little Smith.” And then we try to figure out what they have in common.

Melissa Glenn Haber ’87, History Teacher


I was kind of shocked at how everyone talks with each other at Commonwealth. In my old school, people just stuck with their own friend groups. I thought it would be like that here—but it turned out to be exactly the opposite. I didn't expect to be able to communicate with seniors and juniors and sophomores at all. I feel really good in small communities. You feel seen.  

Chloe ’27

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

You know, I was hearing about all these other schools, and they definitely had a lot to offer, but Commonwealth spoke more to me because I know they take academics seriously here, but they also care about you as a person and finding yourself. 

Sumaya ’26

By the Numbers


students in grades 9–12


self-identified students of color

$1.4 million

financial aid granted for 2023–2024


teachers holding advanced degree


student-to-faculty ratio


all-school getaways each year


average SAT composite score (Class of 2024)

Happening Now

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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.