I was always cynical of having creative subjects like music or P.E taught at high schools, I thought they were more "lifestyle" subjects people should pursue as hobbies rather than learn about. Clearly, though, I now think it's vital that diet, calorie counting and basic nutrition should be taught alongside P.E to dispel the myths of exercise (by itself)  = weight loss. It would also be nice if home economics classes actually taught you healthy, cheap-to-make meals rather than crap when I was in school like hot chocolate and Danish pastries.