I have used this book for several years with a lot of success and parent feedback. It contains all of the Dolch and Fry words in 44 lists. Each list has 25 words. The first list is the 100 most frequently used words. Students must be able to read all these words (with fluency, quickly) before moving on!
I have used it primarily in 1st grade, but it could be used with advanced kinder, or up to 5th grade (since it encompasses so many words).
It is a simple word document, so the formatting may need to be adjusted (and the font). Easy to do though!