Difficulty of Math II?

<p>So I'm using a 2007 version of princeton review, and then i was doing practice tests on sparknotes. i felt that the sparknotes questions were harder and had info that princeton review didn't cover...Is it because my version is too old so it left out info? or is sparknote tests harder than actual ones? I want to know if the score i'm seeing on sparknotes will reflect my actual test score or not...thanks~!</p>