Teachers are finding it easier to teach writing, grammar and punctuation with material that students are fully invested in. And it turns out that comic books have other built-in advantages. The pairing of visual and written plotlines that they rely on appear to be especially helpful to struggling readers. No one is suggesting that comic books should substitute for traditional books or for standard reading and composition lessons. Teachers who would once have dismissed comics out of hand are learning to exploit a genre that clearly has a powerful hold on young minds. They are using what works.