A school in New York has adopted digital textbooks this year for most classes and made the books available on the cloud. Officials say the switch has reduced the weight of backpacks -- replacing heavy textbooks with an iPad -- as well as textbook expenses. "We went to digital because it makes for better learning," says Frank Portanova, vice principal at Archbishop Stepinac High School. "This is the way kids learn today. And the online content is a lot richer. You've got assessments, you've got virtual labs, you've got blogging."