It remarkable that none of the students have gotten together to get rid of Snape. You would think in a school full of students who totally outnumber the teachers that Snape hasn't suffered a near fatal accident yet. Yes, Hermione was in the wrong but Snape should never be allowed to enter Hogwash. Snape turns a blind eye to anything and everything does. He claims he's all about safety in his classroom but allows Malfoy to toss things into other students cauldrons resulting in injuries. Then Snape turns around and blames the student for it. Thus I say again, IT'S A BLOODY MIRCLE THE STUDENTS HAVEN'T KILLED HIM BY NOW!!