I brought a plain peanut butter sandwich to school every day. I can't remember whether the cafeteria had healthy options in addition to the pizza, cheeseburgers, chicken patties, and french fries, but even if they did I wouldn't have bought them. Most of the other kids (high-schoolers) I knew would become vocally grossed out and occasionally offended if they saw anyone eating something "healthy" or green-colored. I brought a salad once and got accused of being anorexic. So my solution to that was to eat nothing but a candy bar and a peanut-butter sandwich all day, and then gorge on whatever was in the refrigerator when I got home at 4:30.