This series of books is great for students who are into mysteries and suspense, because each books includes a mystery that is intended to be solved by the reader. The Lexile level is 620L. I would use this in a in a 3rd grade classroom and let each student choose which mystery of Encyclopedia Brown's they would like to read. I would then hand out a graphic organizer that each child will use to complete the chart for which mystery they are reading. Before finishing the book, they must try to come up with their own solutions, and THEN check themselves by looking at Encyclopedia Brown's solution in the back of the book. They are to list the protagonist, the antagonist, the crime or mystery that has been reported, and clues that will help them solve it.