Barefoot in college and school
I think it is actually a LAW that in the US state supported schools must allow students to dress as they please--including bare feet. I always go barefoot to class.
I don't know if it's a law, but I just went to the University of Wyoming and the University of New Mexico, and at both schools kids went barefoot all the time. When I was at those schools (UW was cold for a lot of the year though) I wore Dr. Scholls a lot, and because they were so noisy, I used to take them off and put them in my backpack for safekeeping and just go to class barefoot. Nobody ever told me anything, and other girls did it too. Not so much the guys, though. I guess they're more shy.