Well WG -
You could call DS15 "Rite" and in "Mite" doesn't equal "Rite."
Ania -
Ok - seems like this is the age were a non-parent mentor is the best way to go. Can you take him Mentor shopping at the local University?
I mean, just knock on doors in a good guess department and introduce yourself until you get someone who agrees to meet your son, then that someone can get other someones to continue talking to your son.
Other ideas - The teaching company CD's on a long car ride, gifted summer camp, setting up a Davidson informal gathering if your in YSP, or a teen get together for you statewide gifted org if not.
Also - sit and watch him play Runescape, is he interested in killing monsters, selling items in his stores, collecting items or chatting online during the play? If he likes selling items, perhaps he'd be interested in the stock market. If it's the chatting, then put your energy into gathering like minded tweens and teens together. My DS10 is lucky enough to have a Yu-gi-oh card tournament in out home town, so he get to hang out with mixed age "fellow nerds" on a weekly basis. Why go out of your way to help him hang out with bright boys? Because the will create a social atmousphere where it is ok to want to learn and develop.
In a way the gradeskip will give him a disadvantage in competitions, but is winning competions a priority compared to DS being in a academic/social environment that may keep him engaged with learning at school? He seems immature to you, but I know that my DS10 is highly variable in his maturity - that is - in many ways he's fully adult in his maturity and in many ways he seems a year or two behind for his age. Be sure you spend enough time around normal 11 and 12 year olds so you are being a fair judge. There isn't any "maturity test," as far as I know. (That's why it's not part of the Iowa Acceleration Scale, I did ask.)
Good luck, and enjoy him as much as possible. Remember that his brain probably isn't shriveling up right this second with the math and LA accomidation. ((Wink)) He's probably using his intelligence in a direction that's difficult for adults to see - one can hope!
Trinity
