If you intend on putting your child in JK/SK, then I agree with the comment that there is no difference between the kids by grade 3. If you want your child to have an advantage or have a high energy child easily distracted, I suggest looking at Montessori, but do your research because they are not all the same and might claim to be Montessori, but really are not. If you go the Montessori route, I recommend you keep your child there at least until grade 1 (but recommend up to grade 3), when the government funded school systems enforce structure on kids. I recently read back in September in the Toronto Star that the "play based" JK/SK is causing for some kids a really hard transition to the structured "sitting in your chair" environment of grade 1 (
http://www.thestar.com/yourtoronto/educ ... s_1_2.html) .... but instead of the Ontario government admitted their curriculum design problems in JK/SK, they're looking to redesign the curriculum for grades 1-3. Kind of scary the direction the current government is taking out kids' future when for 5 years straight, math scores have been declining and the times tables are no longer taught in school ... Wow