S.J.
T.,
I wouldn't threaten him with no Christmas gifts. I agree that would be hard not to do. Then he will be like i knew she wouldn't do that.
However i do agaree that maybe band or some type of sport for him to do. If he is not interested in anything have him to karate or something. Tell him either that or he is going to go to a tutor after school.
I have an 11 year old he has been having problems in school as well. I set up a reward system for his grades. This has seemed to work.
I offer a certain amount of cash for A's B's and C's but D's and F's get money taken from top. You can also do this with his behavoir to. Money talks for kids LOL..
hope this helps