Do you allow food, drinks, and gum in your classroom? I subbed today at a high school and saw every single person in the classes I subbed chewing gum, which I wouldn't allow if I were a full time teacher. I also had students say their teacher lets them eat food in the classroom and that I could leave a note to the teacher telling him/her about it. So that got me thinking, do you allow that kind of stuff with your students? The only thing I would allow is water and that's it.