What are some efficient arguments for teaching comparative religion in public schools?

I am writing an essay for my AP English cl about the promotion of a comparative world religion cl at public schools. I already have a Psychology based reason for the argument (Maslow's Hierarchy of Needs, in that this cl may help a student reach a means of Self-Actualization). I would love to hear some other intellectual arguments--a source would also be nice. Thank you for your help!