How do I tell my parents I ant to join a wrestling school?

As many people here, I want to be a professional wrestler. There is a great wrestling school near me called IWF (Independent Wrestling Federation) that has bred stars like JBL, Nunzio, Tom Brandi, Dawn Marie, and new FCW talent, Fady "The Arabian Bull". I am in my mid teen years and am very athletic. I play baseball and basketball. I am also pretty big for my size, but make up for it in height. I've got all of the physical requirements, but the problem is my parents. My parents absolutely despise wrestling. Yes, they know I like wrestling, but telling them I want to join a wrestling school would practically get me kicked out of the school. How should I do it? I want to start training at around 16-17 as it is cheaper than.