In less than 20 years, charter schools have grown to the point where more than 2 million students will be attending this fall. But not all of the schools are living up to expectations. hide caption

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Students work at the University of the People student computer center in Haiti. Students from 129 countries are currently enrolled with the institution. Courtesy of University of the People hide caption

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Signs on display around town are designed to show support for Penn State's football team as a new season begins. Jeff Brady/NPR hide caption

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Starting this school year, students with concealed carry permits at the University of Colorado Boulder will be allowed to carry handguns in almost all areas of campus. Kirk Siegler for NPR hide caption

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