In second grade, we strive for readers to become more independent and fluent. Many second graders dip into the world of chapter books. Graphic novels often bridge the gap for those readers not quite reader for dedicated chapter books. Books like the Dog Man series by Dav Pilkey are so popular, much to many parents' chagrin! Here is a great resource for additional graphic novels for second graders:
everyday-reading.com/graphic-novels-for-kids/