I've heard (from friends working in education) that you can really tell the difference between kids entering KG who've been to preschool vs. those who haven't (the ones who haven't being the kids who have more separation anxiety and other issues adjusting to KG).
My two only went to PS for 4 hours per week (2 x 2 hour sessions). This exposed them to a group of kids with adult leaders (ie students and teachers) as well as structure and rules. I think it helped them prepare for KG which was only half a day long when they started (now KG is a full 6 hours, which is a whole other can of worms... let's just say the school went through some growing pains re: curriculum adjustments and different end of year levels, etc.)
Anyway. I'm in the "preschool gets them ready for KG" camp.
Last edited by CCN; 05/20/13 02:43 PM.