1. Magic Tree House (hardcover and paperback)
Mary Pope Osborne, Sal Murdocca (Illus.), Random House
2. Diary of a Wimpy Kid (hardcover)
Jeff Kinney, Amulet
3. Big Nate (hardcover and paperback)
Lincoln Peirce, Harper
4. Ivy & Bean (hardcover and paperback)
Annie Barrows, Sophie Blackall (Illus.), Chronicle
5. Harry Potter (hardcover and paperback)
J.K. Rowling, Scholastic/Arthur A. Levine Books
6. Elephant & Piggie (hardcover and paperback)
Mo Willems, Hyperion
7. Captain Underpants (hardcover and paperback)
Dav Pilkey, Scholastic
8. The Mysterious Benedict Society (hardcover and paperback)
Trenton Lee Stewart, Little Brown
9. Theodore Boone (hardcover and paperback)
John Grisham, Dutton
10. Percy Jackson and the Olympians (hardcover and paperback)
Rick Riordan, Miramax
