There's 6 books in the bundle. The tutoring books are for grades PreK - 3 and beyond for any beginner and/or student struggling with the basics of learning to read, write and spell. A classroom aide can use these books for 1 hour a day for intervention instruction. The bundle is perfect for homeschooling and a tutoring business. Books 1 and 2 begin with letter formation and letter sounds. Book 5 advances to "sounding out" short vowel words with a lot of reading material and flashcards. Boo