How much do chefs make a year?

Hey everyone, I'm a sophomore in high school and I'm planning on going to culinary school to become a chef. Now I have a lot to ask. What's the highest ranking of a chef and how much do they get paid? Also, how long should I go to culinary school to become an executive chef? Do executive chefs make a lot of money? I'm only concerned about the money because in the long run i want to open up my own restaurant. Please help!(: