A small mirror was mounted inside my locker door, and I caught a glimpse of my virtual self as I closed it. I’d designed my avatar’s face and body to look, more or less, like my own. My avatar had a slightly smaller nose than me, and he was taller. And thinner. And more muscular. And he didn’t have any teenage acne. But aside from these minor details, we looked more or less identical. The school’s strictly enforced dress code required that all student avatars be human, and of the same gender and age as the student. No giant two-headed hermaphrodite demon unicorn avatars were allowed. Not on school grounds, anyway.