Miss Wormwood is Calvin's bored and depressed teacher, named after the apprentice devil in C.S. Lewis's "The Screwtape Letters". She continuously wears polka-dotted dresses, and serves like others as a foil to Calvin's rude behavior. Calvin's response to the boring studies of schoolwork is endless dreams of his imagination. She is eagerly waiting to retire, taking a large amount of medication, and is apparently a heavy smoker and alcohol drinker.