I may be in the minority here but I think that the kind of meeting to which you refer are simply meant for the child/teacher/parent to "see" each other and for the child to be comfortable by the first day of school. DS and DD had the same set-up four years ago. I would wait at least a couple of months before asking the K teacher to make accomodations. There is just so much for the K teacher to do to get all the kids settled and routines established. It is highly likely that your child's abilities, given how advance he is, will be obvious to the teacher. Even with the new academics, K is still very much about social skills and fun and games. If you can't wait to have the right level of academics, then I would make an appointment for that specific purpose a couple of weeks into the school year.