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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

It’s incredible to be part of a community that is this close. I know it's a little bit cliché, but it's just a really cool feeling to be able to turn the corner and see someone and immediately gravitate to them and talk about whatever. There's never, never a dull day. 

Aadi ’26

There are so many different kinds of people at this school with so many different outlooks in life. Even if you disagree with someone's views, I feel like here you can still have a respectful conversation. And I think that's a really important life skill: to be able to talk to people you don't necessarily see eye-to-eye with.    

Iris '27

Commonwealth has opened up a path to relationships with both students and teachers that I hadn't really seen before. I have teachers that I can rely on, that I can ask questions of and meet with, and I want to continue having those relationships in the future with my professors in college and bosses at jobs. Commonwealth really built a strong foundation for that.

Tomi ’27

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

Chloe-Li-home-thumb

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

There are all of these resources around us that we can take advantage of.… I like how part of your daily routine is going out into the city and still being with your classmates but in a completely different setting.

Felix ’27

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

163

students in grades 9–12

63%

self-identified students of color

$1.8 million

financial aid granted for 2025–2026

85%

teachers holding advanced degree

5:1

student-to-faculty ratio

2

all-school getaways each year

1470

average SAT composite score (Class of 2026)

Happening Now

Group of high school students test

For more than ten years, Commonwealth students, chaperoned by Ms. Haber, have volunteered their time to support Prison Book Program, a Quincy-based nonprofit that supplies incarcerated people with interest-specific books and reading materials. Here, some of our long-serving volunteers reflect on how PBP has shifted their perspectives. 

Earth-Day-assembly-2026-hero

HVAC systems and municipal elections, optimized flight paths and grasshopper genetics: the health of the planet and viability of our natural resources isn’t necessarily scintillating stuff. But as is so often the case at Commonwealth, students’ (and teachers’) enthusiasm is infectious, and during yesterday’s Earth Day Assembly, they delighted and inspired with presentations that truly spanned the globe and all its living things.

Caro-Taylor-Hero

Caro loves comics. She’s tracked the evolution of legacy franchises from their humble, pulpy beginnings to worldwide juggernauts. As leader of Commonwealth’s Comic Art Club, Caro encourages her fellow students to create and support each other in developing new works. And, of course, she draws comics herself, exploring themes like the hollow echo of AI-generated “art.” Keep reading to learn more about her artistic ethos, why “we should all get to be more stupid,” and how Labubu collectible plushies might be harbingers of economic collapse…

A group of middle-school students debating at a Model United Nations conference in a bright library

Confident, articulate, well-versed in international trade policy, sharply dressed, and twelve years old (maybe eleven): the delegates at COMMUN XI impressed their committee chairs, teachers, and each other as they investigated anti-government conspiracies in 1934 Washington, prepared for a supervolcano eruption in Yellowstone National Park, and created of the first human colony on Mars, amongst other challenges. 

A young man in a blue blazer sitting on a chair next to a green plant

What happens when you splice an extrovert with a budding neurologist with a writer? You get Can ’29, whose eagerness to share his ideas on life, the universe, and everything keeps him up at night—quite literally. Keep reading to learn more about this first-year student from Boston, including his writing practice (he invokes everyone from Ray Bradbury to Bob Dylan), favorite Turkish foods, research interests (from CRISPR gene therapy to the head injuries depicted in Home Alone), and much 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.