Actually, peanut allergies can be deadly. If there's only one student with a severe allergy, it would make more sense to give him or her an isolated lunch area. It might make the kid feel bad, but it will keep him/her alive. Just doesn't make sense to set up a "peanut gallery". Sounds like more liberal idiocy at work in OUR schools.
Poor kid.
Segregating the kids with peanuts seems backwards, but I'm guessing that the school administrators think it's less traumatic for the peanut kids to sit together (since there is always likely to be more than one, and they can keep each other company) than the allergic kid to sit all by his lonesome every single day.
Also, like the "Pledge of Allegiance", I'm guessing the kids could give two twits about the issue, and the parents are the ones making the big stink.
Only in America, can this be a real problem.