"Welcome back to Hogwarts, everyone - or just welcome, for the first years. They may be a few years away, but you're all preparing for OWLs, NEWTs, and more importantly, the real world and your future careers, so I expect you all to be focused and attentive. I do have fun lessons planned this year but if you all insist on messing around, we'll stick to the regular lessons. There will be no discussion of politics in my class, and any student found inciting a discussion can expect extra homework. I would also like to remind all students that this is a learning environment and I will not tolerate any discrimination or bullying, so unless you'd like to find yourself in detention, I suggest you keep your personal opinions about your peers to yourself."