I am leveling all of my kids books by AR level, since that is what my school goes by, and have some questions. 1. If I am teaching first grade, should I only set out books with levels of 0-1 or 1.5? or if I am teaching 3rd, 0-3/4? 2. Should I include PD Eastman books in with my Dr. Seuss books (as a collection)? I've leveled about 200 books so far, and my head is spinning!