I guess I shouldn't find it surprising that kids would use the knowledge that a fellow student has a food allergy to bully them. I find it very sad that kids don't have more compassion for others:
The new study furthers the mounting evidence that many kids with food allergies may endure social ostracism while also trying to eat safely.
A 2010 study in the journal Annals of Allergy, Asthma & Immunology said that 35% of kids over age 5 with food allergies have endured bullying, teasing or harassment. Parents of children with food allergies reported in the study that these incidents -- both physical and verbal -- happened because of food allergies.
You can read the complete article at: http://www.cnn.com/2013/01/05/health/bullying-food-allergies/index.html?hpt=he_t4
After reading some of the comments on articles such as these, like they mention it appears that there are a lot of adults that don't have much compassion either. Has your child ever been bullied over their allergy?