[bluGill]

Copyright law apples, not the first page legal looking text. They can make any claims they want to on the first page, but that has no legal standing in court. This quiz almost undoubtedly fall under fair use.

Of course if you need legal advice you need to consult a lawyer.

[spaceribs]

Would you consider this a "Derivative Work" in a legal sense though?

[bluGill]

I would consider it an education use which puts it into a whole other area of copyright law.