I also posted a related question but have not yet received a response, I too have been considering montessori preschool for my daughter, Maleeha, after looking for a more holistic approach to education, I have found after doing some research that its benefits outweigh public preschool, in my area there is also a private middle school and high school with the same/similar approach, which I will consider when the time comes. I have also found the cost is comparable with public childcare programs. Right now I am in the process of setting up tours with Montessori schools in my area, "shopping" to see where it feels right, you may want to do the same and if you don't feel comfortable somewhere, then don't send your child there, but on the other hand, if you get an overwhelming sense of comfort and inspiration, you'll know it's the right choice.
here is a little snippet on public preschool vs. Montessori:
A 2006 study published in the journal "Science" concluded that Montessori students performed better than their standard public school counterparts in a variety of arenas, including not only traditional academic areas such as language and mathematical reasoning, but in social cognition skills as well. [Lillard A, Else-Quest N. "The early years. Evaluating Montessori education." Science. 2006 Sep 29; 313 (5795): 1893-4.]:
On several dimensions, children at a public inner city Montessori school had superior outcomes relative to a sample of Montessori applicants who, because of a random lottery, attended other schools. By the end of kindergarten, the Montessori children performed better on standardized tests of reading and math, engaged in positive interaction on the playground more, and showed advanced social cognition and executive control more. They also showed more concern for fairness and justice. At the end of elementary school, Montessori children wrote more creative essays with more complex sentence structures, selected more positive responses to social dilemmas, and reported feeling more of a sense of community at their school.
The authors concluded that, "when strictly implemented, Montessori education fosters social and academic skills that are equal or superior to those fostered by a pool of other types of schools."
also, go to:
http://www.montessori.edu/
there is a lot of easy to read info, I am also reading "Montessori from the Start: The Child at Home, from Birth to Age Three" by Paula Polk Lillard & Lynn Lillard Jessen (a mother who is a Montessori teacher, and her daughter who was raised with a Montessori education and now teaches it as well) I found the book in the teaching reference section at Borders, along with several other books on the subject.
I hope all this helps, let me know what your outcome is, and please share any info on any schools you may find and tour (I find FINDING the schools is the greatest challenge, I've had to look on several websites, the phone book, and even some just found by driving by).
Best wishes,
N.