What the forget. That's not how religion class is supposed to work. I'm pretty sure she can be fired for saying stupid stuff like that, teachers - religion teachers especially - are supposed to keep a completely neutral perspective and teach about religion (or their respective subject) as a whole and the different religions therein, not insert their opinions on a subject. She's implying demons and possessions and whatnot are real which she is free to believe herself but not to preach to the students.