"Because I've read all the school rules, and what you just did is against the school rules. I could easily send a letter to the Board of Governors telling them about this, and they could bring you up. Or I could pen a letter to Rita Skeeter telling her about what you did." Hermione paused to lick her lips. "All the parents would wonder- is Mad- Eye Moody madder than usual? Is he fit to teach our kids? So no, you won't, or your job will be on tenderhooks."