The Adventures of Icarus, the Invisible Poltergeist

In which Mr. Prongs takes Muggle Studies, Mr. Padfoot has a crush on Professor McGonagall, Miss Evans demonstrates where her son inherited his CAPS LOCK tendencies, Mr. Wormtail discovers that his Animagus form is useful for petty theft, and Mr. Moony explains why none of this can possibly be construed as his fault.