"When Commas Meet Kryptonite: Classroom Lessons from the Comic Book Project" is a new book from Teachers College Press. From the book's web page: "This definitive book presents the newest research linking graphic narratives and literacy learning, as well as the tools teachers will need to make comic book projects a success in their classrooms." "Teachers will learn how to incorporate socially relevant materials and instruction into daily activities, how to differentiate instruction across the K–12 curriculum, and much more."
I can't recommend this book enough, especially if read alongside Bitz's other book Manga High: Literacy, Identity and coming of Age in an Urban High School. They're both great, insightful reads that are derived from research. If they don't illustrate the comics and literacy connection for a person, said person came to the table not wanting to be convinced.