Well..In Norway you will never go a year again, you'll just continue no matter how much you suck at school, even if all of your grades are crap.
The schoolsystem here are not working at all that way, so i guess that if playing games screwed your grades then it would be a good idea, so u don't finish school as an idiot, knowing more when u started then when u quit it...
But it's not that a good idea, parents usually have some control on their kids anyway
