Gosh, I feel like we're pulling teeth here.
So, if I've got this straight..... The kid is 14, you and Mom were never married, but support has been set and he's lived with Mom all his life. Mom uses drugs (according to the kid), but you have no proof. Kid has gotten in trouble for drugs. He'd like to change schools so he can play football/basketball. Mom doesn't agree.
Is there no sports program at his current school? Is he that outstanding that he needs a better program for scholarship opportunities after HS?