I am very interested in Game Testing, Just one question is it a full time job,where can I apply,etc so many...?

OK, Currently i am a junior in high school, The only thing that interest me is Video Games, And i am interested in becoming a Game Tester, Just one problem what cles do I need to take to get a Game testing job from Microsoft,capcom,activison, ea, etc What websites can I go to to help me obtain this job, Is it a full time job, How can I apply for the job, Please contact me