While many think of the tablet computer as a new idea, the concept can traced back to the original Star Trek series and Arthur C. Clarke's 1968 novel 2001: A Space Odyssey. Noel Celis/AFP/Getty Images hide caption

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A teaching assistant pushes a cart of books as he prepares for the first day of school at Caprock Elementary School in the Keller Independent School District in Fort Worth, Texas, in August. State lawmakers slashed more than $4 billion from education this school year — one of the largest cuts in state history — and over 12,000 teachers and support staff have been laid off. LM Otero/AP hide caption

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Military advocates have warned that some schools see service members as walking dollar signs. Dave Herriman/iStockphoto.com hide caption

itoggle caption Dave Herriman/iStockphoto.com