What's wrong with putting all the PB kids tpgether for lunch? Maybe they would make some new friends.
My son, now 30 something, has a PB allergy. When he was in elementary school (Jimmy Carter Presidency) the cafeteria lady told him that because the french fries were cooked in peanut oil(part of the school lunch gov't surplus program) he couldn't have them. I called the school just to ask if the next time veg.oil was purchased it could be of the non-peanut variety. Fortunately, he was attending a private school and a portion of FF was cooked just for him.
This is a serious problem for any child/person who is so affected.