PLEASE help! What do I do after high scool!?

I'm in my final year of high school, my grades are good (a - a*) and my dream is to be a TV illusionist/ escape artist/ mentalist. like criss angel or david blaine. I know I have to practise my *** off and do as many gigs as possible, but when I'm done with high school, what do I do? seriously I need to know, is there a college course for it? were will my income come from?