Keystone Montessori School

  • Keystone Montessori School fosters self-esteem through independence and a love of learning.
  • We provide Montessori preschool, kindergarten, and elementary programs in North Chelmsford, Massachusetts.
  • Founded in 1998, we have approximately 105 students age 3 through 12.
  • At Keystone Montessori School, we maintain a low student to teacher ratio; we have beautiful, spacious classrooms. Our students benefit from our diverse community of learners.
  • At Keystone Montessori School, your children will make friends, explore nature, paint, draw, and do expressive artwork. The Montessori approach allows them to explore reading and math at their own individualized pace. Our students enjoy weekly music and Spanish classes. They learn about different cultures and geography through hands-on materials. We help build children's confidence by mastering everyday living skills. Our goal is to help each child develop self-esteem and a love of learning in a warm, interesting and supportive school community.

School Overview

School TypeMontessori School
School Membership(s)School Assoc.American Montessori Society (AMS)
Other Montessori association(s)
National Association for the Education of Young Children
Religious AffiliationNonsectarian
Grades OfferedGrades Nursery/Preschool-6
Year Founded1998

Student Body

Total Students105 students
Student Body TypeCo-ed
% Students of Color
State avg.: 23%
Students by Grade Keystone Montessori School Student By Grade

Academics and Faculty

Total Classroom Teachers14 teachers
Student : Teacher Ratio8:1
National avg.: 13:1
Classroom Dress CodeCasual

Finances and Admission

Admission DeadlineNone / Rolling


Total ExtracurricularsTotal Extra-curric.4 extracurriculars
ExtracurricularsExtra-curric.Club or Organization:
Chess club, Computer programming, Photography

Arts and Music Programs:
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  • School Location Miles Grades Students
  • Cambridge
    Grades: K-6 | 279 students
    21.4 miles
    110 Cushing Street
    Cambridge, MA 02138
    (617) 349-6555
    21.4 K-6
  • Framingham
    Grades: PK-6 | 47 students
    25.6 miles
    360 Water Street
    Framingham, MA 01705
    (508) 877-8200
    25.6 PK-6
  • Framingham
    Sudbury Valley School
    Sudbury Valley School Photo
    Special Program Emphasis
    Grades: NS-12 | 120 students
    22.2 miles
    2 Winch St
    Framingham, MA 01701
    (508) 877-3030
    22.2 NS-12
  • Lincoln
    Grades: K-8 | 67 students
    14.3 miles
    100 Bedford Road
    Lincoln, MA 01773
    (781) 728-5438
    14.3 K-8
  • Lowell
    Merrimack Valley Christian Day
    Merrimack Valley Christian Day Photo - Preschool Room
    Daycare / Preschool (Church of the Nazarene)
    Grades: NS-PK | 50 students
    0.8 miles
    1195 Varnum Avenue
    Lowell, MA 01854
    (978) 452-2462
    0.8 NS-PK

School Reviews

  5.00 out of 5  (6 reviews)
I have two children that have been at Keystone 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 brain is ready to learn certain material. This makes it more enjoyable and easier for the child. I plan to keep both of my children in until they reach the 6th grade.
- Posted by
Both of my sons are Keystone students. The first went through the lower elementary program and now my youngest will graduate kindergarten and we plan on keeping him in the elementary through grade 6. We were originally part of a big daycare for my oldest son. A friend asked me to go to a Keystone open house and I was just amazed at the quality of the school! Coming from daycare where they really just work on play and social development I was astonished to see preschool aged kids working in areas of math, reading and writing, sensory learning, practical life skills, conflict resolution, science, grace and courtesy, geography with a weekly Spanish and also a music class! The happiness of the kids and their concentration on what they were doing was really eye opening and showed me what our preschooler was really capable of! The school director says that the most critical time for exposing your kids is the ages from 1 to 6. Everything is taught using the Montessori materials which are beautiful, hands on so a kid can develop a visual picture of the concept and understand it. All the teachers are long term and Montessori trained which is alot of work beyond their B.A. degree. The kindergarten can participate in tennis, skiing and swimming lessons with the elementary kids. The 4 through 6th grade play golf, rock climb and go horseback riding in addition to the other sports offered. The elementary program is just amazing too. The entire school individualizes for every child which is really great for the elementary because they don't have to wait for everyone else to catch up as in public school. Geometry, handwriting, computer, language and grammar, math , biology, history, geography and culture plus conflict resolution, peace curriculum, anti-bias curriculum, class meetings are just great. Incredible teachers and administration are very experienced, kind and compassionate. I know the elementary teachers are trained in a special program to help with kids that had reading problems. My friends son has really done well with her help and now he is back to grade level.If you have a kid in daycare do not wait, go see Keystone because they have a full time childcare throughout the year if you need it. I know some elementary families are hoping the school adds a middle school so they don't have to leave! I know they try to keep the tuition lower than other Montessori schools which I appreciate alot. My boys are so confident now and really love to learn for themselves. I think public school turns kids off so they lose their curiosity and stop loving to learn. It's turns into MAKE WORK and kids only do it for a grade. This school is so different. My experience as a parent i can say that I think Keystone has made a huge difference in our lives and our children's.
- Posted by
I cannot say enough wonderful things about this school and what it has done for my children. From the moment we stepped into this school we felt welcomed and part of the community. From the teachers to the administrators, the staff is fully dedicated to education and to its students. There are always activities going on, field trips, parent education events, EL museum, enriching health & wellness programs, and the list goes on and on. The great thing is that in addition to their stellar academic program, they offer enriching after school programs, and offer extended hours for us working parents! We don't have any family near us, so Keystone has been our family, and it has been the best investment we could give to our children. Why send your child to daycare when you can get so much more for your child at essentially the same price? We are so glad our friends told us about Keystone, and we tell our friends the same thing. Don't waste your time at daycare! It's a disservice to your child and his/her ability to learn so much more during this critical time of development! Not to mention, it's not just the academics, but the holistic approach to developing independence, self-esteem, love of learning, and above all happy, caring young stewards. Thank you Keystone!
- Posted by
Very "up to the minute"educationally and supportive, compassionate community for your child. LOVE all the hands on materials plus they have spanish, music, dance, Zumba, skiing, yoga all part of your childs experience there. Focus on global awareness and diversity right from the start in the different cultures! beside outstanding academics my son learned to solve problems and be a good human being! I can't see how anyone could EVER write a bad review ...this place is the BEST!
- Posted by
My son goes to Children's House(3 to 6 year olds). We started with daycare and moved our son to Keystone. Here your child comes first. The founder is busy introducing new programs every year & teachers designing challenging work(small tasks for kids to do) keeping developmental goals in mind. Classrooms are filled with work where child has the freedom to choose what she/he likes. Once they master a work, they move on to the next one & so on. Sounds easy but making our 3 year old to stay calm and focus was a daunting task for us. I have found teachers to be patient and skilled to navigate our child. Our son is very active and he enjoys doing something while not napping. His classroom is filled with variety of work and books & this helps him. Weather permitting, everyday kids have outdoor playtime. Our son makes continent maps in his art/craft session, draws objects, goes to field trips to explore nature, etc. The quality of tools, material & guest lecturers exposed to kids is carefully selected by the founder. Our son has made his way to read phonics book as he still continues to decode new words. He can add/subtract single digit numbers. The credit goes to his teacher & school.
- Posted by
The elementary program at this school is exceptional. The quality of the lessons and level of work my child does while at school absolutely amazes me. I had no idea what Montessori was when we first came to the school -- I was simply looking for a place where my child would be happy and able to learn, and this school has exceeded my expectations. The social consciousness may be my favorite thing after the outstanding academics. Ask about the Wheel of Choice or how the elementary students deal with any problems in a community meeting! The next generation of leaders and problem solvers is being taught right here at Keystone.
- Posted by

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