Education

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In this March 5, 2017 photo, visiting social scientist Melissa Haeffner speaks about global warming and her December trip to Antarctica, at O'Fallon Township High School Milburn campus in O'Fallon, Ill. Haeffner was one of 76 female scientists on the inaugural Homeward Bound expedition to Antarctica, where the women learned leadership skills and how to improve communication among their various fields. Organizers chose Antarctica because of the continent's importance in measuring climate change (Steve Nagy /Belleville News-Democrat, via AP)

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People embrace at a vigil for 16-year-old Deven Holloway, a sophomore at Penn Hills High School, outside of Linton Middle School, Wednesday, March 29, 2017, in the Penn Hills suburb of Pittsburgh. A defense attorney says a man questioned by police in the shooting death of the teenager outside a suburban Pittsburgh middle school was acting in self-defense. (Stephanie Strasburg/Pittsburgh Post-Gazette via AP)

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Illustration on the realities of gender difference by Alexander Hunter/The Washington Times

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People embrace each others as Everest Metro Police Detective Jason Weiland procession moves through Wednesday, March 29, 2017, at D.C. Everest High School in Weston, Wis. Weiland was killed in the line of duty during a string of deadly shootings in Rothschild on March 22, 2017, that left three others dead. (T'xer Zhon Kha/The Post-Crescent via AP)

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Law enforcement personnel gather to watch and honor as Everest Metro Police Detective Jason Weiland's casket exits the school Wednesday, March 29, 2017, during the visitation and funeral procession at D.C. Everest High School in Weston, Wis. Weiland was killed in the line of duty during a string of deadly shootings in Rothschild on March 22, 2017, that left three others dead. (T'xer Zhon Kha/The Post-Crescent via AP)

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ADVANCE FOR MONDAY APRIL 3 AND THEREAFTER - A Tuesday, March 21, 2017 photo shows a 3-D printer at All Saints Episcopal School in Tyler, Texas. The students are part of a group making a prosthetic arm and hand in partnership with the Center for Affordable Prosthetics that will eventually be used by Osman, a 22-year-old man who lives in Honduras. (Chelsea Purgahn/Tyler Morning Telegraph via AP)

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ADVANCE FOR MONDAY APRIL 3 AND THEREAFTER - In a Tuesday, March 21, 2017 photo, Kevin Scott holds a 3-D-printed prosthetic prototype at All Saints Episcopal School in Tyler, Texas. The students are part of a group making a prosthetic arm and hand in partnership with the Center for Affordable Prosthetics that will eventually be used by Osman, a 22-year-old man who lives in Honduras. (Chelsea Purgahn/Tyler Morning Telegraph via AP)

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ADVANCE FOR MONDAY APRIL 3 AND THEREAFTER - In a Tuesday, March 21, 2017 photo, Kevin Scott, Liza Naydanova and Jordan Smith work on a 3-D-printed prosthetic at All Saints Episcopal School in Tyler, Texas. The students are part of a group making a prosthetic arm and hand in partnership with the Center for Affordable Prosthetics that will eventually be used by Osman, a 22-year-old man who lives in Honduras.The students are part of a group making a prosthetic arm and hand in partnership with the Center for Affordable Prosthetics that will eventually be used by Osman, a 22-year-old man who lives in Honduras. (Chelsea Purgahn/Tyler Morning Telegraph via AP)

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FILE - In this April 6, 2016, file photo, Iranian students prepare their robots during the international robotics competition, RoboCup Iran Open 2016, in Tehran, Iran. Universities in the U.S. say President Donald Trump's revised travel ban would block hundreds of graduate students who play key roles in research. Twenty-five of America's largest universities told The Associated Press they've sent acceptance letters to more than 500 students from the six banned countries for next fall, mostly from Iran, who are known for their strength in engineering and sciences. (AP Photo/Vahid Salemi)

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FILE - In this Dec. 1, 2015 file photo, Defense Secretary Ash Carter responds to a question during a forum at the John F. Kennedy School of Government at Harvard University in Cambridge, Mass. Harvard said Tuesday, March 28, 2017, that Carter is returning as a professor of technology and global affairs, and as director of Harvard's Belfer Center think tank. He previously taught at the Ivy League School from 1996 to 2009. (AP Photo/Steven Senne, File)

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Flanked by members of the education community, Assemblywoman Shirley Weber, D-San Diego, discusses her proposed bill that would extend the amount of time teachers have to earn tenure, at a Capitol news conference, Tuesday, March 28, 2017. If approved by the Legislature and signed by Gov. Jerry Brown, Weber's measure, AB1220 would extend the evaluation period for new teachers from two years to three before they can earn tenure. (AP Photo/Sophia Bollag)

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In this Oct. 28, 2015, file photo, replicas of Republican presidential candidates Jeb Bush, left, and Marco Rubio face off in the free speech zone on the campus of the University of Colorado before the Republican presidential debate in Boulder, Colo. Some colleges provide so-called "free speech zones" as the only place where people can protest and distribute fliers. (AP Photo/David Zalubowski, File)

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FILE - In this March 13, 2009 file photo, students protest the shooting of an unarmed Grand Valley State University student in the "Free Speech Zone" at Grand Valley State University in Allendale, Mich. Some colleges provide so-called "free speech zones" as the only place where people can protest and distribute fliers. A student filed a federal lawsuit on Tuesday, March 28, 2017, against Los Angeles Pierce College, charging the community college violated his First Amendment rights in November 2016 when campus officials barred him from passing out copies of the U.S. Constitution because he wasn't in the free speech zone and because he hadn't applied to use it. (Hollyn Johnson/Grand Rapids Press via AP, File)

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Sen. Mike Bell, R-Riceville, waits to address the state Senate in Nashville, Tenn., on Monday, March 27, 2017. Bell said he was upset that a public radio reporter from Chattanooga did not identify herself as a member of the media when she attended a meeting between the senator and high school students, but that he did not call for her to be fired. (AP Photo/Erik Schelzig)

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In this Dec. 1, 2015, file photo, then-Defense Secretary Ash Carter responds to a question during a forum at the John F. Kennedy School of Government at Harvard University in Cambridge, Mass. (AP Photo/Steven Senne, File)

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Ivanka Trump, left, Education Secretary Betsy DeVos, center, listens as NASA Astronaut Kay Hire speaks to female students at the Smithsonian's National Air and Space Museum in Washington, Tuesday, March 28, 2017, to celebrate Women's History Month. (AP Photo/Manuel Balce Ceneta)

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Ivanka Trump, left, and Education Secretary Betsy DeVos, center, listen as NASA Astronaut Kay Hire speaks during their visit to the Smithsonian's National Air and Space Museum in Washington, Tuesday, March 28, 2017, to celebrate Women's History Month. (AP Photo/Manuel Balce Ceneta)

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From right, Ivanka Trump, Education Secretary Betsy DeVos, John R. "Jack" Dailey, director of the National Air and Space Museum and NASA Astronaut Kay Hire, applaud at the Smithsonian's National Air and Space Museum in Washington, Tuesday, March 28, 2017, during an event to celebrate Women's History Month. (AP Photo/Manuel Balce Ceneta)

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Mississippi State's Morgan William (2) celebrates at the conclusion of the regional final of the NCAA women's college basketball tournament against Baylor, Sunday, March 26, 2017, in Oklahoma City. Mississippi State won 94-85. (AP Photo/Alonzo Adams)