Another piece of advice from someone currently working as a chef: absolutely keep your eye on culinary school. In the mean time, though, take any cooking classes in your high school if they still have a "home ec." program.
Then, when you turn 16, go to a decent restaurant in your area (not a chain and not a 5-star either---something in between) and apply to be a dishwasher, bar back, busboy--anything, and make it known that you want to be a chef someday. A few kids working in my restaurant did that, and if the manager/head chef thought they were serious, they found themselves working salad side or as "fry-guy" in short order. Even that kind of experience at an early age goes a long way into getting into a better culinary school than someone with no experience. Keep your grades up in school, too.
Don't be discouraged by any bigmouths you run into. Like any other profession, you run into all kinds of people, and that includes surly, sarcastic, bitter people, etc. If you're chatting with another cook or chef and mention you'd like to be a chef someday,and they come back with a "no you don't, kid" or laugh, scoff, or something as equally boorish, don't let that influence you.
Lastly, don't get caught up in the partying--it's an easy rut to fall into, given the late hours, lifestyle, etc., someone mentioned in a previous post. That goes for going in on your own restaurant, too. Make sure you know and trust your partners if you go in one one. Many investments have been lost and lives ruined because one partner had an addiction problem or was embezzling money. You seem to have your head on straight at a pretty early age, so trust your judgment and make the right choices and decisions.
Good luck!