​​We enrolled our older daughter at Keystone Montessori at the age of four, after having attended another great, but smaller, local preschool that we felt she had outgrown. We weren't seeking out a ''Montessori'' experience, per se, but our neighbor's kids both attended Keystone and loved it, and it seemed to be a good fit for our family location and schedule-wise. Our daughter, now in kindergarten, *absolutely thrived* at Keystone, intellectually, emotionally, and socially. She must have been hungry for learning, because in the first week, she was bringing home projects she had worked on, enthusiastically explaining details, and completely excited to go back the next day. There are so many opportunities for learning, exploration, play and friendship offered. It is a structured environment, but not too structured, and all of the kids I have observed there seem to really enjoy it. I would describe the atmosphere as ''rich'' and ''layered''. There's a lot going on, but the teachers seem very tuned into each kid's interests and capabilities. The kids can't do whatever they want at any given moment, but there is a ton of opportunity for the child to have choice and explore their interests. The Montessori method believes the child is so much more capable than what adults generally give them credit for, and Keystone has created an environment where they help the kids comfortably stretch themselves. When I'm visiting, the kids all seem calm and engaged (indoors) and happy and playful (outdoors). Our younger daughter attended Keystone from age 2 and has two more years. She loves it as well. After the adjustment period, the only problem we came across was that she got upset when it was time to leave (a good problem, indeed!). We would highly recommend Keystone Montessori.