"Potter endangered two of my students, Vincent Crabbe and Gregory Goyle, by knocking them out and stuffing them in a broom closet. They were bruised and being covered by a mop, Crabbe was nearly suffocated. On top of that, these two are responsible for the Swelling Solution incident which hurt many of my students. They also stole ingredients from my Potions cupboard and used to to impersonate Crabbe and Goyle with Polyjuice Potion."