Education

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** FILE ** President Barack Obama helps stain shelves during a National Day of Service school improvement project at Burrville Elementary School in Washington, D.C., Saturday, Jan. 19, 2013. (Official White House Photo by Pete Souza)

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**FILE** New U.S. Environmental Protection Agency Administrator Gina McCarthy delivers a speech at Harvard Law School in Cambridge, Mass., on July 30, 2013. During her speech, the first as the head of the EPA, McCarthy told an audience that curbing climate-altering pollution will strengthen the economy. (Associated Press)

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**FILE** Practice air-powered handguns sit on a teacher's desk in a classroom at Clarksville High School in Clarksville, Ark., on July 11, 2013. Twenty Clarksville School District staff members are training during the summer to be armed security guards on campus. (Associated Press)

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Washington Redskins quarterback Kirk Cousins, middle, motivates students while leading drills during Kirk Cousins Football Camp at Hope College in Holland, Mich., Thursday, July 11, 2013. The camp was open to middle school boys. Cousins played football at Michigan State and at Holland Christian High School. (AP Photo/Grand Rapids Press, Cory Morse)

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** FILE ** The American Federation of Teachers in West Virginia is considering a lawsuit over a new dress code that bars faculty from wearing blue jeans. (Associated Press)

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** FILE ** In this April 10, 2013, file-pool photo, first lady Michelle Obama talks to students at Harper High School in Chicago. (AP Photo/Nancy Stone, Pool)

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In this July 10, 2013, file photo, prospective students tour Georgetown University's campus in Washington. (AP Photo/Jacquelyn Martin) ** FILE **

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** FILE ** A doctor attends to a student from Government Secondary School in Mamudo, at the Potiskum General Hospital, Nigeria, following an attack by gunmen on Saturday July 6, 2013. Islamic militants attacked a boarding school before dawn Saturday, dousing a dormitory in fuel and lighting it ablaze as students slept, survivors said. (AP Photo/Adamu Adamu)