My son in 2nd grade and I are reading some great chapter books and graphic novels that would be perfect for independent reading for 3rd through 6th grade.
Reading strategies for getting kids to love to read: Book Love by Melissa Taylor of Imagination Soup.
Chapter books hot off the presses to tempt any reader including reluctant boy readers and for all kids ages 7 and up.
7th grade reluctant reader boy challenge: More books like Diary of a Wimpy Kid and books about skateboarding.
Middle grade fiction, Young Adult, non-fiction and graphic novels for kids ages 12 through 15 that read two or three grades below.