Great Chapter Book Series (Organized by age):

Time Warp Trio by Jon Scieszka  (Ages 5-8)

Captain Underpants by Dav Pilkey  (Ages 5-9)

The Magic Treehouse Series by Mary Pope Osbourne (Ages 6-8)

The Junie B. Jones Series by Barbara Park (Ages 6-8)

The Judy Moody Series by Megan Mcdonald (Ages 6-10)

The Adventures of The Bailey School Kids by Debbie Dadley and Marcia Thornton Jones (Ages 7 and up)

The Boxcar Children by Gertrude Chandler Warner  (Ages 7-10)

The Ramona Series by Beverly Cleary  (Ages 8 and up)

The Little House Series by Laura Ingalls Wilder  (Ages 8-12)

Snarf Attack, Underfoodle, and the Scret Life: The Riot Brothers Tell All and other Riot Brothers books by Mary Amato  (Ages 8-12)

Wayside School books by Louis Sachar (Ages 9 and up)

Diary of a Wimpy Kid and Rodrick Rules by Jeff Kinney (Ages 9 and up)

Bone by Jeff Smith (Ages 9 and up)

Although not a series…anything by Ronald Dahl or E.B. White.