About 40 percent of high schools start before 8 a.m., which contributes to chronic sleep deprivation among teens, according to the American Academy of Pediatrics. Chris Waits/Flickr hide caption

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Inmates from several Alabama state prisons take a math class at J.F. Ingram State Technical College. The campus becomes a medium-security facility when the students arrive. Dan Carsen/WBHM hide caption

itoggle caption Dan Carsen/WBHM

Erika Kalberer (left) and her mother, Kris. Their family has been living in their car. Kris tells her daughter, "I don't think sometimes you know how strong you are." StoryCorps hide caption

itoggle caption StoryCorps

Teachers with the Jennings School District pick up trash Tuesday on West Florissant Avenue in Ferguson, Mo., the scene of nightly police clashes. Jennings and the neighboring Ferguson school district have canceled class due to ongoing unrest. Elise Hu/NPR hide caption

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Circle of 6 was born out of the 2011 "Apps Against Abuse" challenge, a partnership between the Office of the Vice President, Department of Health and Human Services and the White House Office of Science and Technology Policy. Kainaz Amaria/NPR hide caption

itoggle caption Kainaz Amaria/NPR

One of many demonstrations highlighting what has been called a national epidemic of campus sexual assault. Wolfram Burner/Flickr hide caption

itoggle caption Wolfram Burner/Flickr