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Clubs & Activities

At CHS, we strongly believe in providing our Upper School students with opportunities to pursue interests beyond the classroom and to cultivate their leadership skills beyond our school. 

Kids working on lego robotics

Lego Robotics

The LEGO Robotics Team was established in 2013 and serves as a capstone experience exclusively for our 6th graders. Students engage in research, problem-solving, coding, and engineering to build and program a LEGO robot that navigates the missions of a robot game through the First Lego League (FLL) Program. As part of the program, students also participate in a research project to identify and solve a relevant real-world problem. Students work both collaboratively and independently on their innovative research projects. Then, CHS LEGO Robotics Teams participate in a regional competition sponsored by the First LEGO League (FLL) of Massachusetts.

Math Olympiads

The Math Olympiads program has been in place for many years and provides competition and fellowship for those students who welcome an additional challenge. Following a curriculum that is used by schools around the world, students in Grades 4-6 attend practices on a monthly basis and participate in monthly tests. In preparation for the reality of the 21st-century workplace, students compete as a team and are compared against teams from across the country and around the world. At the end of the year, achievement is recognized both on an individual and also on a team basis. CHS teams have scored consistently in the top 10% of schools nationwide. 

A student pushes a cart of food donations at the Newton Food Pantry.

Friends in Our Community

Friends in our Community (FIOC) is an affinity group for students who are interested in assisting with community service projects that support our school and the larger community. Some of the projects we work on include the Winter Toy Drive for different local shelters, MLK Cereal Drive for the Newton Food Pantry, and Spring Toiletry Collection to make Mother’s Day baskets for St. Mary’s Home, a women and children’s shelter in Boston. We also work to find ways to thank our community. Occasionally, FIOC will take the Upper School students on field trips after school to deliver collected donations to the organizations.


We chose CHS because of its commitment to diversity, not only in its classrooms, but also in its thoughtful and progressive social-emotional learning. CHS has given our very young children the language to talk about and appreciate differences of all kinds. It teaches them a sense of justice balanced with kindness toward everyone.  Rachel and Donald
Parents '26 '29

Afterschool Enrichment Programs

We offer many opportunities for enrichment activities during our extended day. Activities take place for students of all ages, and offer a chance for students to explore new or established interests and passions.