How to start a prosecuting attorney career help?

Okay I am in high school and I wanna go to law school to be a prosecuting attorney I have really tried to prepare for this.by taking honors classes and being a teencourt volunteer. I wanna peruse a career in being a prosecuting attorney but I.don't know how to do about it. I need a guide as to where to apply what to do I wanna know how and where I'm going to do this before I.leave higjschool