Keystone Montessori School

Keystone Montessori School

Private Pre-K, Elementary School | Grade Pre-K-6
55 Middlesex St,  North Chelmsford, MA
4.7
4.2

School Details

Students
95
Head of School
Cary Williams
Student Teacher Ratio
3:1
Annual Tuition
$18,900

Niche Grade Details

Teachers
Student Teacher Ratio
3:1
Teachers
42
Full Time Teachers
32
Part Time Teachers
10
Teachers in First or Second Year
12%

GreatSchools Rating Details

Student Diversity

Female
78.9%
Male
21.1%
Asian
50%
White
42.5%
Black
7.5%
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This School’s Reviews

Niche Reviews
4.7 3 Reviews
5.0 Works Here
7/6/2024
Keystone is the best place I've ever worked. They support their students, staff and parents equally and I feel like I'm part of a family. My coteachers are amazing and supportive and always open to answering questions. The administration is fantastic.
GreatSchools Reviews
4.2 25 Reviews
5.0 parent
1/14/2025
Literally perfect in every way, in my opinion. The staff, the ENTIRE staff (not just teachers), are so incredibly supportive and genuinely care about my kid, even on his bad days. They definitely lead with love and take the time to get to know him as a person, even though he's only 5. He is importan...
1.0 other
11/16/2019
Negative! At the beginning promise too much only that you pad quicker the big money!
5.0 parent
3/13/2018
I have two children that have been here for 6 years. I see a major difference between how they learn and how their friends in public school learn, with my kids learning being the better of the two. Montessori is child-centered meaning it is focused on how the individual child learns and when their b...
4.0 parent
2/13/2018
We started this year and absolutely love it. The teachers and staff are excellent and so passionate about what they do. We are seeing so much growth and progress with our 4 year old in Children’s House and it seems to be happening so naturally. Every week I feel like we can say, this is what we hope...

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