The following sites offer quality support materials.
The Multiple Skill Series – https://www.mheonline.com/program/view/4/1/104/0076020622
Great supplemental leveled readers that students can progress through quickly. Five comprehension questions follow each story.
The Great Books Foundation – http://www.greatbooks.org/about/
Recommends and provides quality books with extensive lesson plans for readers of all ages utilizing the shared inquiry.
James Patterson’s Readkiddoread website – http://www.readkiddoread.com/ James Patterson, the mystery/crime author, recommends “great books, cool books, books they (your kids) would positively, absolutely love.”
Mari Inc – http://mariinc.com/
The biggest selection of Literature Guides anywhere!
More specifically, Portals to Reading is a fantastic structured resource!
Leveled Readers – http://www.readinga-z.com/
Readers you can download.
Reading level comparison charts
Printable books to practice specific sight words