I am a college student, I am 22.
I think that eating in class should be a privilege, and shouldn't include full meals, but things such as a snack bar, candy, etc.
Reason 1: Certain foods can stimulate concentration and help students perform better. (banana for example has many perks)
Reason 2: It is important that young people keep their metabolism going. Eating small, healthy snacks throughout the day can help keep students motivated and awake.
Reason 3: Students may be less likely to rebel if the rules are not as stricked. It is a privilege and will give them an incentive to behave. (Beacuse if they don't... you can take that privilege away)