S.W.
My 3 1/2 year old is at Springfield Montessori on Mitchell (in between Ygnacio and Treat off of Oak) and I LOVE this school. The teachers are all excellent and the academics are great. It's very structured and the teachers will work with you on any issues your child maybe having. Downside is that you have to make your child's lunch and since they are on a school calendar they have lots of breaks(2-3 days between school and summer, 2 weeks at Christmas and 1 week spring break). good luck.