Like everyone is saying... It really depends on the school. Visit several montessori schools in your area (if you are lucky enough to have a few). What to ask & look for: lots of materials/works of varying skill sets and variety. Ask how "traditional Montessori" the school is, ect. Most Montessori teachers are very accomodating. Almost everything is explained on a 1:1 or 1:2 basis then the child is left to work on his/her own. At age 3, I tend to think Montessori is a good fit for many very intelligent kids because of the 3-6 classrooms. The concern may be what happens in that last year of "primary" (3-6 room) and that varies by school, so be sure to ask.