Education

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Education Commissioner Kevin Huffman addresses the Senate Education Committee in Nashville, Tenn., on Wednesday, March 26, 2014. The panel later advanced Gov. Bill Haslam's proposal to create a limited school voucher program in Tennessee. (AP Photo/Erik Schelzig)

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Republican Sens. Brian Kelsey of Gemrantown, right, and Stacey Campfield of Knoxville confer during a meeting of the Senate Education Committee in Nashville, Tenn., on Wednesday, March 26, 2014. The panel later advanced Gov. Bill Haslam's proposal to create a limited school voucher program in Tennessee. (AP Photo/Erik Schelzig)

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Senate Majority Leader Mark Norris, R-Collierville, addresses the Senate Education Committee in Nashville, Tenn., on Wednesday, March 26, 2014. The panel later advanced Gov. Bill Haslam's proposal to create a limited school voucher program in Tennessee. (AP Photo/Erik Schelzig)

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Sen. Brian Kelsey, R-Germantown, speaks during a meeting of the Senate Education Committee in Nashville, Tenn., on Wednesday, March 26, 2014. The panel later advanced Gov. Bill Haslam's proposal to create a limited school voucher program in Tennessee. (AP Photo/Erik Schelzig)

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In this Dec. 3, 2013 file photo, Adofo Muhammad, center, principal of Bedford Academy High School, teaches 10th and 11th graders in his Global Studies class in the Brooklyn Borough of New York. (AP Photo/Bebeto Matthews, File) ** FILE **

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In this March 25, 2014 photo, students leave Stuyvesant High School, one of the nine specialized public high schools in New York City. (AP Photo/Bebeto Matthews) **FILE**

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In this April. 1, 2011 photo, New York City fifth graders enter PS321, a public elementary school in the Brooklyn Borough of New York. New York state has the most segregated public schools in the nation, with many black and Latino students attending schools with virtually no white classmates, according to a report released Wednesday, March 26, 2014, by the Civil Rights Project at the University of California at Los Angeles. (AP Photo/Mark Lennihan)

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Supporters of ousted President Mohammed Morsi chant slogans during a demonstration outside Cairo University in Giza, Egypt, Wednesday, March 26, 2014. Hundreds of largely Islamist university students in a number of universities protested Wednesday against the mass death sentences issued against more than 520 suspected supporters of President Mohammed Morsi in a cursory trial, setting off clashes that left dozens injured. At Cairo University, hundreds of students who attempted to take their protest outside the campus were met with volleys of tear gas from police. (AP Photo/Ahmed Abdel Fattah, El Shorouk) EGYPT OUT

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Protesters chant slogans outside of Cairo University in Giza, Egypt, Wednesday, March 26, 2014. Hundreds of largely Islamist university students in a number of universities protested Wednesday against the mass death sentences issued against more than 520 suspected supporters of President Mohammed Morsi in a cursory trial, setting off clashes that left dozens injured. At Cairo University, hundreds of students who attempted to take their protest outside the campus were met with volleys of tear gas from police. (AP Photo/Ahmed Abd El Latif, El Shorouk) EGYPT OUT

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A cloud of red smoke from flares fills the air as supporters of ousted President Mohammed Morsi chant slogans during a demonstration outside Cairo University in Giza, Egypt, Cairo's sister city, Wednesday, March 26, 2014. Clashes have erupted between security forces and students protests at a number of Egyptian universities against mass death sentences issued for hundreds of Islamists in a cursory trial. At Cairo University, hundreds of students who attempted to take their protest outside the campus Wednesday were met with volleys of tear gas from police. Khadiga el-Kholy, a student participating in the protest, said several students were injured. (AP Photo/Ahmed Abdel Fattah, El Shorouk) EGYPT OUT

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A riot policeman fires tear gas to disperse protesters during clashes outside Cairo University in Giza, Egypt, Wednesday, March 26, 2014. Hundreds of largely Islamist university students in a number of universities protested Wednesday against the mass death sentences issued against more than 520 suspected supporters of President Mohammed Morsi in a cursory trial, setting off clashes that left dozens injured. At Cairo University, hundreds of students who attempted to take their protest outside the campus were met with volleys of tear gas from police. (AP Photo/Ahmed Abd El Latif, El Shorouk) EGYPT OUT

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Riot police fire tear gas during clashes outside Cairo University in Giza, Egypt, Wednesday, March 26, 2014. Hundreds of largely Islamist university students in a number of universities protested Wednesday against the mass death sentences issued against more than 520 suspected supporters of President Mohammed Morsi in a cursory trial, setting off clashes that left dozens injured. At Cairo University, hundreds of students who attempted to take their protest outside the campus were met with volleys of tear gas from police. (AP Photo/Ahmed Abd El Latif, El Shorouk) EGYPT OUT

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Ohio Gov. John Kasich signs a bill to grant school districts additional calamity days before a group of students at the Statehouse in Columbus, Ohio. Snow, ice and harsh temperatures caused many districts across Ohio to exhaust the school year's five allowable calamity days, most commonly called "snow days," in which schools can close without making up the lost instructional time. Ohio schools will receive four extra calamity days this year under the bill. (AP Photo/Ann Sanner)