"I'm of the opinion that there just isn't reasonable grounds for expulsion. The damage I cause them isn't life threatening or crippling," Casimir explained. Artemis might have had a point though, because every now and then he could see it in the eyes of some teachers that they'd love to turn some rowdy, disrespectful student into a frog.... or maybe a salamander. 

"But yes... leaving soon would be great."

Casimir's suddenly became more attentive as Artemis mentioned the book again. Here was a nice opening to having more time with the book, and he didn't even have to do anything beyond just offering his help.

"I wouldn't mind assisting you in that venture," Casimir said. "You obviously have something of great interest, so it would be a shame if its contents remained unknown to us. The only condition I have is that I fully be able to access the book any time I desire, and study any part of it that I wish."