My ds5 is starting K next month and my dd7 finished two years ago. With dd we didn't tell the teacher anything we knew about her. The teacher was a 40 year veteran and we decided that she would know what she was looking at with dd.
Unfortunately, that teacher was burnt out and done. DD was a lovely, compliant child in the classroom and spent much of the year bored or answering questions for other children. Thankfully we had her in Montessori in the mornings that year and she did her real learning each day there.
DS will go to all day kindy, they just changed it this year. (BOO!) At his IEP meeting for next year (hearing loss) we mentioned that ds was also "bright" (3/5 people there knew dd)and let it drop. I think that it is a good idea to allow the teacher to "discover" the child's talents on their own and if they don't, then bring it up.
Send books from home for him to read each day so that he won't get stuck with Dick and Jane when he wants the Great Stinks.
Fingers crossed for all of us!
