The teachers' union bears no portion of the blame, I'm sure.
Will the guys at the prom be wearing their tuxes halfway down their butts?
"....by the cut of your suit, you went to Oxford or wherever. Naturally you think human beings dress like that. But you wear it with such disdain, my guess is you didn't come from money, and your school friends never let you forget it. Which means that you were at that school by the grace of someone else's charity: hence that chip on your shoulder."
-- Vesper Lynd, Casino Royale
Just shows that they're overworked and need a raise.