Arne Duncan, U.S. Secretary of Education, will step down in December — after nearly seven years in the job. Astrid Riecken/Landov hide caption

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Education Secretary Arne Duncan said in a letter to his staff that he will step down to spend more time with his family, who live in Chicago. Chip Somodevilla/Getty Images hide caption

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The winning IMPCT team poses with former President Bill Clinton and (at far right) Philip Hult, co-chairman, EF Education First. The team members (from left) are Andres Escobar, Juan Diego Prudot, Taylor Scobbie and An-Nung Chen Jonathan Fickies/AP Images for Hult Prize Foundation hide caption

itoggle caption Jonathan Fickies/AP Images for Hult Prize Foundation

Fernando Aguilar plays with his 8-year-old son Isaac. He worries that Isaac isn't enrolled in the gifted and talented program in Houston. Laura Isensee/Houston Public Media hide caption

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Molly Pollak pages through a book of letters from her former students. Alex Welsh for NPR hide caption

itoggle caption Alex Welsh for NPR

Jeff Zlotnik leads meditation near the San Diego State University campus. Members of the new fraternity and sorority won't have to be Buddhist, he says; they'll have house rules based on Buddhist teachings, but also normal Greek activities like parties — "hopefully with some mindful behavior and mindful activities and mindful action." Claire Trageser/KPBS hide caption

itoggle caption Claire Trageser/KPBS

Longer lines in the cafeteria and shorter lunch periods mean many public school students get just 15 minutes to eat. Yet researchers say when kids get less than 20 minutes for lunch, they eat less of everything on their tray. iStockphoto hide caption

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