These are the book sets that I have and use for guided reading with novels:

The Twits Low James and the Giant Peach Medium Bridge to Terabithia High
The Whipping Boy Low Mrs. Piggle Wiggle Medium Dear Mr. Henshaw High
Charlotte's Web Low Loser Medium Strider High
Buffalo Before Breakfast Low Matilda Medium The Young Man and the Sea High
Twisters on Tuesday Low Bunnicula Medium The Lion, the Witch, and the Wardrobe High
Sadako and 1,000 Paper Cranes Low The Kid Who Ran for President Medium Star Girl High
What the Wind Told Low The BFG Medium Bud, Not Buddy High
    Holes Medium Walk Two Moons High
    Tales of a Fourth Grade Nothing Medium Series of Unfortunate Events: The Bad Beginning High
    There's A Boy in the Girls' Bathroom Medium My Side of the Mountain High
    The Mouse and the Motorcycle Medium Frindle High
    Ribsy Medium Brian's Winter High


I also have Literature Circle Guides for the Following Books:

Walk Two Moons Bud, Not Buddy Charlotte's Web
Because of Winn-Dixie Sarah, Plain and Tall Harry Potter and the Sorcerer's Stone
The Call of the Wild Tales of a Fourth Grade Nothing Julie of the Wolves
Island of the Blue Dolphins Little House on the Prairie