Should junk food be banned from schools?

Should junk food be banned from school. No it should not be banned from school because every student loves eating something tasty and sweet. Students should be able to eat what they want to eat, the last things adults should do is regulate candy. Some students go the vending machines at school to get themselves a reward for doing good in class or acing a test. The snacks the students eat might help relieve stress from some upcoming tests.