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, 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


The notion of shared stewardship very aptly describes the sort of investment that all of our colleagues feel in Commonwealth. There's a desire to make sure that everything we do improves the place—and an appreciation for how complex the system is and the breadth of potential consequences. If you change one thing over here, how will it shift things over there?

Rebecca Jackman, Chemistry Teacher and Assistant Head of School

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


Before I visited Commonwealth, I hadn’t thought about how going to a very small school would compare, coming from a bigger school. But now that I'm here, the small-school setting makes everyone a lot closer. You really know everyone in your grade and even a bunch of people outside it. It's been a lot of fun and a really big change from what I thought high school would be. It’s very freeing. 

Ethan ’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 2023)

Happening Now


Discussions at Commonwealth have a sneaky habit of wandering out of classrooms. Whether it's debating Romeo’s decision-making skills, unpacking resistance movements in colonial Central America, or finding problems that don’t conform to the Church-Turing thesis, these spirited chats spill out into the hall, follow friends to lunch, and stick in your head long after the day is done. Here, you get to listen in on one of those conversations, as senior Anto ’24 and veteran math teacher Al Letarte dive into wildly and wonderfully abstract math. 

Diverse group of choral singers perform

The pandemic gutted choral programs, but voices are still strong at Commonwealth, as the students, staff, and alumni/ae who know our performing groups best can attest.


Travel across diners and family restaurants, through fine dining, and all the way to the revolutionary Californian restaurant Chez Panisse, to see that changes in the way Americans dined out and the way restaurants catered to them in the decades following World War II reflected and affected the era’s immense societal changes and evolving views of what it meant to be prosperous.


The same problem-solving prowess that filled Nick Campbell's days at Commonwealth now animates his career guiding Hollywood talent. Keep reading to learn more about his journey from mathematician to manager and the future of the industry (particularly post-ChatGPT) as he sees it.

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.