(Harry and Ron are enjoying watching the students hurrying up to their classes while they have a free period…)

Minerva McGonagall: Potter.

Harry Potter (to Ron): Oh, this can’t be good.

Minerva McGonagall: Enjoying ourselves, are we?

Harry Potter: I had a free period this morning, professor.

Minerva McGonagall: So I noticed. I would think you would want to fill it with Potions. Or is it no longer your ambition to become an Auror?

Harry Potter: It was, but I was told I had to get an “Outstanding” in my O.W.L.

Minerva McGonagall: So you did, when Professor Snape was teaching Potions. However, Professor Slughorn is perfectly happy to accept N.E.W.T.s students with “Exceeds Expectations.”

Harry Potter: Brilliant. Um… Well, I’ll head there straightaway.

Minerva McGonagall: Oh, good, good. Potter, take Weasley with you. He looks far too happy over there.

From Harry Potter and the Half-Blood Prince (2009) | Produced by Warner Bros.