definitely go to the school district site and find their policy (assuming this is a public school). I had to dig for a while to find ours but the wording is very supportive of skipping, actually.

Yes, I would not wait until the end of the year.

If you have more above grade level work from home, that might be very helpful to mention or show. For instance: does he play chess very well or obsess over legos, etc., examples of books he enjoys, examples of playing with math at home (workbooks or just his own games he makes up), does he do his own science experiments? - they don't have to work, just show an interest, does he build things? write stories (or tell stories)?
anecdotes like this can help paint a better picture for the school of a child who needs more challenge.
**On re-reading, I see you did mention he has written a big book, that is awesome!

Good luck!

Last edited by chris1234; 05/11/11 12:20 PM.