Founded in 1998, the school is located in a beautifully renovated mill building in North Chelmsford. Our spacious classrooms create a peaceful and relaxed learning environment where children love to explore and learn, guided by experienced and certified Montessori teachers. Our facility includes a library, art room, and multi-purpose room. Every student enjoys art, music, and Spanish as part of their Keystone experience. Whether children are developing their focus and fine motor skills, mastering letter sounds, or adding four-digit numbers, they enjoy learning through hands-on experience with superb materials. Our teachers guide each child through the curriculum in a series of success-oriented steps.