So where do they go, all the teachers, when the bell rings at 3 o'clock?
When you're a kid, you don't really think they go anywhere. Except home, maybe, to grade papers and plan lessons and think up pop quizzes.
And when you find out otherwise, it's a strange experience. Many people remember it vividly: the disorienting feeling of encountering your teacher in the grocery store, or in the line at McDonald's, talking and acting just like other grownups. A jarring reminder that they have lives outside the classroom.