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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

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.

Meet Commonwealth Students: Jake '26, Seriously Unserious

“Get better at laughing at yourself when you struggle,” says Jake ’26. “That's what makes it, dare I say, even pleasant to get through some of the more difficult moments.” It’s no wonder, then, that Jake seeks out a challenge wherever he can find one, from new foods to nuanced class discussions, rigorous hikes to chaotic Hancock meal prep—and can laugh off the bumps along the way. Read on to learn more about what brings a smile to this senior’s face.

Meet Commonwealth Students: Ethan ’26, Just Build a Lot of Things

Ethan insists he’s not “good at programming—[he] just built a lot of things.” Things like an app to track progress on research papers for Commonwealth history classes, an algorithm that can play Battleship, and a convolutional neural network that can process handwriting. Here’s your chance to discover more you probably didn’t know about this senior from Newton, including the key to improving as a programmer (with no offense to Commonwealth’s Computer Science teachers!), the novel he finds enjoyably confusing, and his thoughts on that “Greek dude called Xeno…”

Meet Commonwealth Staff: D. Clinton Williams, Director of Diversity, Equity, and Inclusion

Growing up in Chicago’s “Black Metropolis,” the South Side, and going to the posh Hyde Park neighborhood for school, D. Clinton Williams saw socioeconomic divides first hand. He has since mentored and supported students in the same way he was once mentored and supported, including now as Commonwealth’s Director of Diversity, Equity, and Inclusion. Keep reading to follow the path that led him here.

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.