"He's the best Defense Against the Dark Arts teacher we've ever had," said Dean Thomas boldly, and there was a murmur of agreement from the rest of the class.  Snape looked more menacing than ever. 

"You are easily satisfied. Lupin is hardly overtaxing you -- I ,Would expect first years to be able to deal with Red Caps and grindylows. Today we shall discuss --" 

Harry watched him flick through the textbook, to the very back chapter, which he must know they hadn't covered. 

"Werewolves," said Snape. 

"But, sir," said Hermione, seemingly unable to restrain herself, "we're not supposed to do werewolves yet, we're due to start hinkypunks --" 

"Miss Granger," said Snape in a voice of deadly calm, "I was under the impression that I am teaching this lesson, not you. And I am telling you all to turn to page 394." He glanced around again. 'All of you! Now!" 

With many bitter sidelong looks and some sullen muttering, the class opened their books. 

"Which of you can tell me how we distinguish between the werewolf and the true wolf?" said Snape. 

Everyone sat in motionless silence; everyone except Hermione, whose hand, as it so often did, had shot straight into the air. Amelia quickly raised her hand after. 

"Anyone?" Snape said, ignoring Hermione and Amelia. His twisted smile was back. "Are you telling me that Professor Lupin hasn't even taught you the basic distinction between --" 

"We told you," said Parvati suddenly, "we haven't got as far as werewolves yet, we're still on --"

 "Silence!" snarled Snape. "Well, well, well, I never thought I'd meet a third-year class who wouldn't even recognize a werewolf when they saw one. I shall make a point of informing Professor Dumbledore how very behind you all are...."