Students need to limit themselves. I am an opponent of banning all junk foods from school. It's true that junk food is very bad for your health, but I think it's part of the learning process. Students need to learn how to limit themselves; they need to understand what is too much, and what is okay. School is a very good place to teach students this because that's what a school is for, it's for learning! So that's why I am an opponent of banning junk food in school.