Education

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T. J. Lane waits for court proceedings to begin in Geauga County Common Pleas Court on Tuesday, Feb. 26, 2013, in Chardon, Ohio. Lane, charged with killing three students at an Ohio high school, pleaded guilty to three counts of aggravated murder and other charges. (AP (Photo/Marvin Fong, Pool)

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Jim Collum (foreground) and other students work on light saber skills during a Golden Gate Knights class in San Francisco on Feb. 10, 2013. A group of San Francisco Star Wars fans who want to travel to a galaxy not that far away have created a combat choreography class for Jedis-in-training with their weapon of choice: the light saber. (Associated Press)

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Golden Gate Knights instructor Alain Block sorts through light sabers for students before class in San Francisco on Feb. 10, 2013. A group of San Francisco Star Wars fans who want to travel to a galaxy not that far away have created a combat choreography class for Jedis-in-training with their weapon of choice: the light saber. (Associated Press)

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Golden Gate Knights students practice light saber techniques during class in San Francisco on Feb. 10, 2013. A group of San Francisco Star Wars fans who want to travel to a galaxy not that far away have created a combat choreography class for Jedis-in-training with their weapon of choice: the light saber. (Associated Press)

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Jim Collum (foreground) and other students work on light saber skills during a Golden Gate Knights class in San Francisco on Feb. 10, 2013. A group of San Francisco Star Wars fans who want to travel to a galaxy not that far away have created a combat choreography class for Jedis-in-training with their weapon of choice: the light saber. (Associated Press)

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** FILE ** A worker sweeps outside the College of Computer Science & Technology on the Yuquan campus of Zhejiang University in Hangzhou, China, on Thursday, Feb. 21, 2013. Unit 61398 of the People's Liberation Army, which has been recruiting computer experts from the school for at least a decade, is alleged to be one of several hacking operations run by China's military. (AP Photo)

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Students in Robbi Giuliano's fifth-grade class sit on yoga balls as they complete their assignments at Westtown-Thornbury Elementary School Monday, Feb. 4, 2013, in West Chester, Pa. By making the sitter work to stay balanced, the balls force muscle engagement and increased blood flow, leading to more alertness. (AP Photo/Matt Rourke)