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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

Meet Commonwealth Students: Millie ’28, Past Small Talk

Millie ’28 wants to get to know you—the real you. A thespian, artist, and academic, Millie casts her social net wide, finding joy in the connections she forms and nurtures with the people around her. “Feeling like you’re seen and you can see others for who they are,” she says, is what it’s all about. And connecting with others is integral to how Millie lives: she wants to talk about classes, make people laugh, share artwork (the visual and performing kinds). While she’s at it, she leans exuberantly into the thrill that comes from a world-shifting English lesson, an intense afternoon of play rehearsals, or a classic Monty Python bit. Read on to catch some of her infectious enthusiasm for yourself.

Meet Commonwealth Students: Matt ’26, Know Thyself

High school is, if nothing else, a time for growth, but you’ll be hard pressed to find a teenager more cognizant of and intentional with that growth than Matt ’26. A poet and budding philosopher, Matt is happiest when wrestling with new skills and ideas. He embraces challenges, the chance to work harder, because it means he’s growing—even if that growth isn’t linear, isn’t obvious, and isn’t in the classroom. Take a moment to get to know this senior from Dedham, then follow his tips to know yourself. 

Meet Commonwealth Students: Mirabel ’26, Center Stage

When you attend Chinese schools, like Mirabel ’26 did for most of her life, public speaking is paramount: “A lot of the classes were about using English in writing plays, acting in plays,” she says. “You have kids read these short essays in their Mandarin textbooks with as much emotion as they can. So it's something I've picked up.” “Picked up” is putting it mildly. Since coming to Commonwealth, Mirabel has been a theater mainstay and a decorated public speaker. Keep reading to discover how this senior spends her time outside the spotlight, including her celestial interests, the darkly comic reason why Shakespeare always makes her laugh, and the paradox that’s “terrifying to think about.”

Faculty Projects: Giving Voice to Resistance

The film En el tiempo de las mariposas, about the Mirabal sisters who resisted Trujillo in the Dominican Republic. The testimony of Reinaldo Arenas under the Cuban regime. The writings of Rodolfo Walsh, who died trying to expose the Argentine dictatorship. These are just a few of the resources recently assembled by Spanish teacher Mónica Schilder for her Spanish 4 class on the topic of dictatorships in Latin America. Focusing on the Dominican Republic, Cuba, Argentina, and Chile, Ms. Schilder aims to introduce students to both the “historical reality and the human experience” behind these regimes, and help them reflect on the dangers of authoritarian governments.

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.