Babble's Top Book List of all Time

Grade School

1 The Harry Potter series

2 The Hundred Dresses

3 Charlotte's Web

4 From the Mixed Up Files of Mrs. Basil E. Frankweiler

5 Holes

6 Inkheart Trilogy

7 Little House on the Prairie series

8 Number the Stars

9 Pink and Say

10 Pippi Longstocking

11 Hatchet

12 Hoot

13 The Lion, the Witch and the Wardrobe

14 A Wrinkle In Time

15 Percy Jackson and the Olympians series

16 The Secret Garden

17 Return to Sender

18 The Wall

19 Because of Winn-Dixie

20 Where the Mountain Meets the Moon

List taken from:
http://www.babble.com/products/kids-products/best-kids-books-by-age-grade-school-back-to-school-guide/