They never tell you in teacher school, and it’s rarely discussed elsewhere. It is never, ever portrayed in movies and tv shows about teaching. Teachers rarely bring it up around non-teachers for fear it will make us look weak or inadequate.
Valerie Strauss in the Washington Post once put together a series of quotes to answer the question “How hard is teaching?” and asked for more in the comments section. My rant didn’t entirely fit there, so I’m putting it here, because it is on the list of Top Ten Things They Never Tell You in Teacher School. Fulll Story