In many parts of the U.S., sleepaway camp is a rite of summer. In fact, every June, July, and August, more than 12,000 American camps operate at or near capacity; 7,000 of those are sleepaway camps. That’s a lot of campers, and a lot of money: it’s estimated that summer camp is a $15 billion industry in the U.S. Kids can attend marine biology sleepaway camp or sleepaway sailing camp or sleepaway math camp. There is, it seems, a camp for every child, parent, and preference.