"Can't stay long, Mother," he said. "I'm up front, the prefects have got two compartments to themselves-""Oh, are you a prefect, Percy?" said one of the twins, with an air of great surprise. "You shoul..."
- J.K. Rowling
"You see, I, unlike you, have been made a prefect, which means that I, unlike you, have the power to hand out punishments.”“Yeah,” said Harry, “but you, unlike me, are a git."
"I feel I owe you another explanation Harry," said Dumbledore hesitantly. "You may, perhaps, wondered why I never chose you as a prefect? I must confess...that I rather thought...you had enough respons..."