Keystone Montessori School

Keystone Montessori School

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KMS provides authentic Montessori education to children ages 3 months through 6th grade

With large classrooms, multi-purpose community space, art room, and library, all housed in 17,000 square feet of newly-renovated space, every child enjoys an individualized education designed for them to explore and follow their passions. From infancy through preschool, kindergarten, and up through grade six, children develop their inner motivation by working with materials that engage them. Every

Photos from Keystone Montessori School's post 06/18/2026

Keystone was delighted to host Lindsay Aucella of Puppet Pals for a recent enrichment program. Children’s House students were absolutely captivated by Lindsay’s funny, fast-paced, and highly interactive puppet performance, where larger-than-life characters sparked laughter and joyful participation. From silly surprises to animated storytelling, each moment invited our young minds into a world of creativity and play.

Beyond the fun, Lindsay’s storytelling beautifully weaves in social-emotional learning, modeling kindness, connection, and the power of shared joy—important elements of a child’s development that extend far beyond the performance itself.

We are so grateful to Lindsay for bringing her incredible talents, thoughtful messaging, and contagious energy to Keystone.

lindsayspuppetpals.com

06/15/2026
06/13/2026

Photos from Keystone Montessori School's post 06/03/2026

From a delicious Waffle Wednesday breakfast (with all the toppings) to flowers galore and a beautiful comment board overflowing with compliments, gratitude, and well-deserved kudos, we enjoyed celebrating the incredible educators who make our community so special.

Our teachers bring humor, patience, creativity, and dedication to each day, and this week in May was just one small way to honor all they do for our children and families. We are so grateful for this amazing team! Thank you!

Photos from Keystone Montessori School's post 05/29/2026

Our Elementary students were fully immersed in the outstanding activities and experiences at Outdoor Classroom in Ocean Park, Maine— what an unforgettable experience it was!

From beach exploration and sandcastle engineering along the rising tides, to discovering quartz rocks, observing bald eagles soaring overhead, and investigating forest habitats, each day was filled with hands-on discovery and reflection. Students examined squid, explored the life of salamanders and frogs, learned new outdoor games, carved wood, built rafts, hiked through the woods, and even paused to quietly listen as the forest settled in for the night.

There were campfire skits, songs, s’mores, laughter, teamwork, and countless moments of connection, with nature and with one another. These experiences nurture independence, observation, resilience, and a deep appreciation for the world around us in ways that simply cannot happen indoors.

This is Montessori in action: what a beautiful week of growth, friendship, and adventure!

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55 Middlesex Street
North Chelmsford, MA
01863

Opening Hours

Monday 7:30am - 6pm
Tuesday 7:30am - 6pm
Wednesday 7:30am - 6pm
Thursday 7:30am - 6pm
Friday 7:30am - 6pm