<p>just wondering...what changes in the ap and sat 2 books from year to year? i've found nothing different btwn the 2005-2006 and 2006-2007 versions of several books</p>
<p>Unless CB says there are changes (like for Eng. Lang next year), then there won't be much differences between prep books. Even when there are changes made by CB the prep books might still stay very similar.</p>