It's summer..just make sure he (is it your son, or daughter?) outside playing,..lots of physical activity..maybe a program at your local Y..try and do some stuff with him on weekends..museums, field trips..camping.
Encourage him to read...anything...get him away from the boob tube and the computer.. Try Rush's "Revere" books..he'll learn REAL American history..
IOW..don't overload him..he's a kid..
Fishing camping biking sports zoo. Live life, learn much.
He does Boy Scouts where we camp once a month and will be involved in summer training for Cross Country so I am not worried about keeping him outdoor and active.
Also, he was supposed to “earn” a dirt bike by getting straight A’s at least one quarter this year. He has missed it by a couple classes each quarter and it looks like he will not get it in the last quarter. I need a fall back plan because I really want to get it for him but I also want him to feel he earned it. I thought if he completed some courses or passes some tests over material that he should know but that his school doesn’t teach, that would be a win / win and he could still get his dirt bike.