College students aid a colleague as he performs a keg stand in this file photo. Princeton Review released its new list of top party schools in America Monday. Joe Raedle/Getty Images hide caption

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Campers Mary Church and Jimmy Cong use their sense of smell to detect whether a chemical reaction has taken place. Amy Standen for NPR hide caption

itoggle caption Amy Standen for NPR

Michael Levy enjoys a game of Mahjiang with local youth. Courtesy Of The Author hide caption

itoggle caption Courtesy Of The Author

Nick Dunn, 16, gave up on school shortly after he lost his father. He lives with his mother, Deborah Gilmore Dunn, in rural South Carolina. Claudio Sanchez/NPR hide caption

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Danny Lamont Jones, 16, doesn't live at the Rose Street Youth Shelter anymore, but he spends a lot of his time there. Chris Hartlove hide caption

itoggle caption Chris Hartlove

Nick Dunn, 16, gave up on school shortly after he lost his father. He lives with his mother, Deborah Gilmore Dunn, in rural South Carolina. Claudio Sanchez/NPR hide caption

itoggle caption Claudio Sanchez/NPR

Lauren Ortega, 20, has two young kids and is struggling to finish her GED. Claudio Sanchez/NPR hide caption

itoggle caption Claudio Sanchez/NPR

Patrick Lundvick, 19, dropped out, spent time in jail and is now getting a second chance in South Chicago. Claudio Sanchez/NPR hide caption

itoggle caption Claudio Sanchez/NPR