The document is a letter from the Fulton County School System English/Language Arts and Media Services Departments providing information about the summer reading list for 4th to 5th grade students. It explains that the reading list contains a wide variety of fiction and non-fiction books at different Lexile levels to allow students to choose books that interest them. It notes that Lexile levels indicate vocabulary difficulty and sentence complexity but not necessarily maturity of content. The letter encourages parents to be involved in helping their children select appropriate books and stresses that although books may have lower Lexile levels, some contents could be more mature.