Why leave the book?

[jmoses22002]

No: HPFGUIDX 136944

Why would Snape leave the HBP book in his old potions class?  If I
were to have made a bunch of helpfull notes in my book I would have it
in my private library.  The only thing I can think of is that he left
it there knowing that Harry wanted to take the class, but wouldn't be
prepared for it.  I'm not saying that Snape was trying to help Harry.
 Maybe he was trying to get him expelled.  Snape knew that the book
had dark spells in it that weren't explained.  I'm betting that Snape
also knew that Harry's curriosity would get the best of him.


jmoses