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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

Hanna-Gialil-2

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

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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

Rebecca-Jackman-teaching-thumb

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

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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

154

students in grades 9–12

56%

self-identified students of color

$1.4 million

financial aid granted for 2023–2024

83%

teachers holding advanced degree

5:1

student-to-faculty ratio

2

all-school getaways each year

1520

average SAT composite score (Class of 2024)

Happening Now

cell-phones-in-schools-essay

Cell phones in schools: to ban or not to ban? School administrators the world over continue to debate this question, arriving at disparate conclusions. So, too, did the students in our senior seminar, The Purposes of Education. In this essay examining the role of cell phones in teenagers’ academic and social lives, Dava '24 explores the many inherent tensions of having a super computer in your pocket.

Practicing Compassion: Alumni/ae Physicians on Prioritizing Patient Well-Being

In an overtaxed healthcare system, personal connection can feel like a luxury. But for these alumni/ae, knowing and treating patients as individuals is core to their practice, whether they’re redefining palliative care, breaking down health disparities in communities of color, blending math and biochemistry to improve clinical trials, or caring for HIV patients three decades after their initial diagnoses—a miraculous feat, in retrospect. Keep reading to step inside four radically different doctors’ shoes to learn how they’re elevating patient care.

Lydia-Symanich-video-game-designer-alumna

“If you wish to make an apple pie from scratch,” Carl Sagan observed, “you must first invent the universe.’” That sounds like a job for video-game designer Lydia Symchych ’14. Keep reading to follow her path to creating educational STEM games and the unexpected side quests along the way. 

Project Week Assembly 2024: Embracing Mistakes

High school can breed an unfortunate penchant for perfectionism—striving for flawless grades, top-tier college admissions, or a résumé brimming with extracurriculars and awards. But Project Week, Commonwealth’s annual week of student-designed endeavors in any field that sparks their interest, affords students the opportunity to lean into imperfection, get their hands dirty, make mistakes, reassess, and travel wherever their minds and ambitions take them, as eight students related at our recent Project Week Assembly.

Jay '24 Takes on One Vote (and Light Bulb and Plastic Fork) at a Time

“Interested in civics and government through a mathematical lens,” Jay ’24 is already an influential figure in his hometown of Brookline's politics. Keep reading to learn more about his advocacy work and analytical approach towards ranked-choice voting, lowering carbon emissions, and more.

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.