WASHINGTON (AP) — Well before the cleanup from Superstorm Sandy was in full swing, students could read about the weather system that slammed the East Coast in their textbooks.

Welcome to the new digital bookcase, where traditional ink-and-paper textbooks have given way to iPads and book bags are getting lighter. Publishers update students' books almost instantly with the latest events or research. Schools are increasingly looking to the hand-held tablets as a way to sustain students' interest, reward their achievements and, in some cases, actually keep per-student costs down.

"We must use technology to empower teachers and improve the way students learn," said Joel Klein, a former New York City schools' chief who now leads News Corp.'s education tablet program. "At its best, education technology will change the face of education by helping teachers manage the classroom and personalize instruction."