Should public schools celebrate Halloween?

Halloween, the favorite holiday of many kids, is almost upon us. What's more fun than dreaming up a costume, parading for parents and peers, and gobbling free candy? School grounds have long been a focus for Halloween hoopla, but for some schools, these traditions can pose considerable problems. Dress code concerns can make costumes a headache for teachers and administrators, bans on junk food prohibit candy consumption, and safety issues surrounding outdoor parades and other events are drawing increasing levels of caution. In some schools, Halloween celebrations have been banned entirely in order to accommodate families for whom the holiday conflicts with their religious beliefs. How should schools respond to these obstacles? We're interested in your opinion.