The bottom portion of the reading data is reading fluency. This score comes from DIBELS (Dynamic Indicators of Basic Early Literacy Skills). This is an assessment that measures how many words your child can read in a minute of grade level text and be able to retell what he/she has read. Students at the end of third grade should be able to read 100 words in a minute.
Although students who are not fluent readers can still comprehend text, they may have difficulty later when the text becomes more complex. Right now, as third graders, I am more concerned with how well they are understanding what they can read, not necessarily how quickly they can read it.
Here is an example of what is coming home. Scholastic Book Clubs, the backs of some books, and some libraries have the guided reading levels available to use as a reference. The information on this Reading Data sheet will help this summer in your child selecting books to read so he/she doesn't slide backwards in reading levels.