Graphic novels use visual literacy and multimodal learning two methods of teaching. Graphic novels also have a history of being motivating to students. This study aims to quantify the degree of influence graphic novels have on secondary student comprehension and motivation. Students were recruited from two classrooms taught by one twelfth-grade teacher. Students who received a graphic novel supplement performed significantly higher on comprehension as measured by grades than students who did not receive a graphic novel supplement for that material. Before and after each unit, students completed a motivational survey. There were no significant differences between pre- and post-test motivation data. Results indicate that more research on the effect of graphic novels on comprehension is needed. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]