Yes I live in Canada ands they've been doing this for years. No peanut butter sandwiches or any product that has peanuts in it. Some children are so allergic, that if they touch a crumb, it will send them into a life threatening reaction. I used to feel annoyed but we got used to it. Some schools do have a 'designated lunchroom' where kids who have peanut butter can eat there. But this could also be a problem, if the child gets it on their clothes and the allergic child touches it, then an allergic reaction happens. Yes it's legal and I think it's helps if we think, if we were the parent of a child like this- how scary it is to send your child to school.