If I worked full time when my DD was that age, I would have had my heart set on a nanny with moving up to the pre-K at 3 or 4 depending upon what the other kids in the area do. But play-based, as I found out, is more natural. If your child like music at home, make sure there is music in the program. One Montessori I went to was sooooooo quiet, and they had no music at all, all day long...no way!