i think banning it is absolutely unnecessary and silly. just because a child is not eating the pb & j right then does not mean that they are not contaminated. they can eat it at home and bring the oils to school on their hands, clothes, papers, books etc and get them on supplies, structures, other people, and so on. also, school facilities are often used on the weekend and can be contaminated then. having had students in my class with severe allergies, i learned that he oils can last 6 months unless properly cleaned. that means that library books, and anything that goes home could also be a danger. the best way to protect the child with an allergy is to have an adult clean areas/things before they touch them. i had to wipe down my student's desk, community supplies, seats on the bus, etc before she touched them every day. also every student in my room washed before he/she was admitted to my room. tihs is how it has been done at our school for years. currently we have had 6 kids with severe peanut allergies and numerous with more mild allergies, but have only had one child with an episode ever at our school (she was my student and her mother accidently gave her a peanutbutter cookie in her lunch
). all of the kids, even in kinder can administer their own epi-pens if needed and all of them know to look and check their areas/foods.
also, now we have a large number of children coming in with wheat, fruit, and veggie allergies. some so severe, a child in our grade could not even be in the room when we made cookies due to the flour being airborne and if he breathed it in, he would have a reaction. so the teacher made her cookies in my room and his mother made a seperate batch in her room with a group of kids if we ban peanutbutter for the kids who are allergic, do we ban those other foods too? where do we draw the line? besides, we have to teach all the children to be careful, they do go places outside of school where it could make a difference. (example: my coworker took two students to the movies as a reward, and after they ate reeses cups they wanted to go wash their table because someone with allergies could sit there next. well trained.)