Atrium School is a progressive school for PreKindergarten through Grade 8 located in Watertown, MA near the Cambridge line.
Established in 1982, we believe that small classes, passionate faculty, and a truly engaging, hands-on learning environment can draw out the best in each child.
Our graduates emerge curious and capable, truly loving learning, and welcomed by both public and independent next-schools throughout the Boston area. Our students experience "Excellence with Joy" each day.
Quick Facts (2025-26)
- Grades: Prekindergarten-8
- Enrollment: 114 students
- Yearly Tuition: $35,085
- Acceptance rate: 50%
- Average class size: 12 students
- Application Deadline: Jan. 15 / rolling
- Source: Verified school update
School Overview
School Membership(s)School Assoc.
Grades Offered
Grades Prekindergarten-8
ADD/ADHD Support
Yes
Year Founded
1982
School Calendar
Last Day of School
Thu. Jun 11, 2026
Student Body
Total Students
114 students
Student Body Type
Co-ed
% Students of Color
20%
State avg.: 30%
Students by Grade

Academics and Faculty
Total Classroom Teachers
25 teachers
Student-Teacher Ratio
5:1
National avg.: 13:1
% Faculty w/Advanced Degree
60%
Average Class Size
12 students
List of Courses Offered
Matriculation DataMatric. Data
Classroom Dress Code
Casual
Tuition and Acceptance Rate
Admission Deadline
Jan. 15 / rolling
Yearly Tuition Cost
$35,085
Tuition Notes
Financial aid available. Listed tuition is for PreK in the 2023-2024 school year; tuition rates are variable by grade and available online.
% on Financial Aid
30%
Acceptance Rate
50%
National avg.: 81%
Admissions Director
Mason Sand
Admissions Associate
Molly St. Clair
Application URL
Sports
Total Sports Offered
3 sports
Extracurriculars
Total ExtracurricularsTotal Extra-curric.
17 extracurriculars
ExtracurricularsExtra-curric.
Club or Organization:
Arts and Music Programs:
Recreational Athletic Programs:
After School ProgramDestination Imagination
Dungeons and Dragons ClubGardening Club
Homework ClubNewspaper
Running ClubScience Olympiad
Writing ClubYearbook
Arts and Music Programs:
Art StudioMusic
Theater ProgramUkulele
Recreational Athletic Programs:
Cross CountryRock Climbing
Track and Field
School Notes
- School Motto: Excellence with Joy
- School Mascot: Giraffe
- At Atrium, we prioritize deep inquiry, encourage broad exploration, and delight in the discoveries we make about ourselves and the world around us.
- Immersed in the heart of Watertown's thriving East End, Atrium School is a joyful, diverse, and inclusive PreKGrade 8 community that maintains a balanced blend of structure and challenge.
Source: Verified school update
Frequently Asked Questions
How much does Atrium School cost?
Atrium School's tuition is approximately $35,085 for private students.
What is the acceptance rate of Atrium School?
The acceptance rate of Atrium School is 50%, which is lower than the national average of 71%.
What sports does Atrium School offer?
Atrium School offers 3 interscholastic sports: Cross Country, Rock Climbing and Track and Field.
When is the application deadline for Atrium School?
The application deadline for Atrium School is Jan. 15 / rolling (applications are due on Jan. 15 but additional applications are reviewed year-round as space permits ).
School Reviews
5 1/17/2020
As an educator, I am continually impressed by everything Atrium accomplishes. It is a student-centered, diverse and vibrant community of engaged, inclusive learners where 21st century skills are being taught with creativity and dedication, and the faculty are among the best I have ever encountered. My son has learned and adopted much more sophisticated research and inquiry skills by middle school than my older children did in high school. He truly enjoys school and always is eager to tell me what he learned every day- and better yet, what it has stimulated him to consider and explore outside of school hours. Because I can compare it to the other schools my older children attended, I can attest to what a remarkable learning environment they have cultivated. My only regret is not knowing about it for my older children.
5 7/21/2018
My daughter started at Atrium in Pre-K and is currently in kindergarten. Atrium is a wonderful school filled with enthusiastic, dedicated teachers who genuinely strive to teach children to love learning! It is a warm, welcoming community where each child's individuality is celebrated. The curriculum is rich and thoughtful. Even in Pre-K, students get weekly Spanish, music, art, library and PE. Atrium also has a great after school staff and lots of after school enrichment classes. My daughter loves school! She runs into the building each day, greeting the head of school, and giving high fives to the kids in the older grades. Atrium's mission is "Excellence with Joy," and it does a great job of living up to that mission.
5 4/7/2017
We are very fortunate that both of our sons are at Atrium. As a family we, have been a part of the Atrium community for six years now. Atrium is a place where our boys are truly known, valued for who they are, and appreciated by all members of the community. What`s more is that they know this, and therefore they feel safe enough to take risks in their learning. Their educational experience is undoubtedly a rich and deep one, but what we, as parents, find equally, if not more important, is that they are happy going to school every day. Atrium is a place where students learn alongside a dedicated faculty who not only foster intellectual and academic curiosity but also cultivate a culture of kindness, empathy, innovation, and creativity. As parents, we are happy to be members of a welcoming, warm, inclusive community of adults including our fellow parents, teachers, staff, and administrators. Atrium`s middle school is a rare find; it maintains an progressive ethos while effectively preparing students for whatever lies ahead. Every year, our boys have been deeply engaged and appropriately challenged. We know (and are very thankful) that Atrium students leave Atrium understanding what it takes to be successful students, confident individuals, inquisitive learners, respectful members of a community, and productive citizens. Atrium is a true gem of a school!
5 3/22/2017
Our daughter has been at Atrium since pre-K and is now a thriving 5th grade powerhouse, all due to the excellent education she has received at Atrium School. The community is supportive, the teachers talented and each student is valued for their inherent talents. THE BEST.
5 3/29/2013
Atrium is a warm, nurturing, progressive school where both our children are thriving. We are so grateful to have found this treasure. The teachers are committed and creative, with a deep understanding of their students. Our children are being appropriately challenged academically, and they love going to school every day, because Atrium fosters joy in learning. Most importantly for our family, Atrium respects and celebrates our children for who they are.
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