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Murdoch has called education "a $500 billion market in the U.S. alone that is waiting desperately to be transformed," and Bill Gates has predicted that public budgets for textbooks, workbooks, and tests will shift toward hardware and software, creating a $9 billion market for educational technology within the next decade. News Corp. isn't alone in this race. Apple, Amazon, Samsung, Dell, Microsoft, textbook giants such as Pearson and McGraw Hill Education, and many new entrants are seeking a way in. (26) (27) Its operating system gives teachers and schools an unprecedented level of control over the devices in students' hands. There is no home button, for example: Students can't just exit out of a math program the way they can close Angry Birds on an iPad. Klein is betting that by continuing to roll out customized features in close consultation with teachers and students, Amplify can beat out consumer devices. (28) (29) "We're competing with Call of Duty and Temple Run," says Alan Dang, who produces the games. "If we can get these kids to spend 30 minutes a week, that's 32 additional hours of instructional time a year." (30)

(A) In addition to its curriculum, it's also developing content for outside the classroom, beginning with 14 education-minded games from star indie designers. 

(B) Plus, 45 states have just adopted the same new curriculum standards—meaning they're shopping for new instructional materials. 

(C) Despite the sales push, many educators are still skeptical of tablets in the classroom—and Amplify seems designed to put them at ease. 

(D) Taken together, Amplify presents a vision of an integrated, 21st-century classroom—though it's also very much a corporate-minded dream, in which one company provides every need. 

(AB) Instead, if a teacher hits her "eyes on teacher" button, any or every student's tablet in her classroom suspends; a message tells the student to look up.