Originally Posted by
northpaw
Your first line about people is true, but little kids only barely qualify. :) With some allergies that severe, eating the food isn't necessarily required, so mischief that wouldn't be a big deal otherwise (e.g. a food fight in the cafeteria) could have tragic consequences. Accidents can still happen, but from a liability standpoint, the schools aren't as vulnerable if they take the cover-your-a$$ approach.
Story time: I have a similarly severe allergy to milk. In third grade, a girl who was somehow fascinated by that went into my sack lunch and snuck some Doritos in with my corn chips. Thankfully, I noticed the different taste before I ate enough to kill me, but it just goes to show that... well, little kids do dumb things, so if you're responsible for them (morally, legally, financially), you minimize the risk of harm where you can.