Yes, this addiction is definitely a problem--since you certainly need to concentrate on school right now. The thought thast come to my mind is to just give your game console and your games to someone to hold for you--someone you will trust and who knows has your best interest at heart. Someone who is willing to be the meanie and not let you have access to these items until you have done a good job with your school work--and proven that to be the case. (Maybe even have your teachers confirm this truth as well, in case you think you might be prone to cheating....) So, if you choose to just sit and fantasize about the games and not get your work done, then you know that means the consequence is going even longer without the games.....And also have someone monitor your computer activities, since I assume you need it sometimes for school.

Meanwhile, try to develop other interests and hobbies, too. Get outside. Find a sport. Go out with some friends (and don't talk games.) You are letting all sorts of good things in your life pass you by, plus taking the chance of diminishing your future chances--and for what? A fantasy world!

You can do it! Make school work a game in a sense. Challenge yourself to conquer it and come out the victor!

When you can prove to yourself and to others that you can live without the games--when you can get this addiction under control--then you can try bringing the items home and put time limits on them--at least maybe only playing after your schoolwork is done well each night or such. But if you let things get out of control again--away go the items......

Sound like a plan?