Former New York Mayor Michael Bloomberg was the No. 4 philanthropist in 2013, The Chronicle of Philanthropy reported. Bebeto Matthews/AP hide caption
Erin Pruckno, a preschool teacher in Washington, D.C. (clockwise from top left); Mei-Ling Uliasz, a second-grade teacher in Danbury, Conn.; Elizabeth Metzger, right, an educator in south Florida, with a friend at a football game; and Mathias "Spider" Schergen, who teaches at Jenner Elementary Academy of the Arts in Chicago. Elissa Nadworny/NPR (left column) and Courtesy of Mei-Ling Uliasz and Elizabeth "Biz" Metzger hide caption
Doll's-eye necklace pendant Courtesy of Mei-Ling Uliasz hide caption
Five-year-old Kyle Romain sits on the lap of his grandmother, Barbara Romain, at a football game. Kyle lost his sight when he was hit by a stray bullet two months ago. Eric Westervelt/NPR hide caption
The Limbic Reward System lights up when curiosity is piqued. LA Johnson/NPR hide caption
Los Angeles Unified School District Superintendent John Deasy, seen in a photo taken last year, says his resignation Thursday was "by mutual agreement. Damian Dovarganes/AP hide caption
Schergen teaching his sixth-graders at Jenner Elementary Academy of the Arts in Chicago. Elissa Nadworny/NPR hide caption
Art projects like these anatomy murals are woven into the curriculum at the Homer Plessy Community Charter school in New Orleans. Eric Westervelt/NPR hide caption
Students at Broward College in Fort Lauderdale, Fla., attend a debt management workshop. Broward is one of 29 colleges that no longer accepts unsubsidized student loans. The effort is part of an experiment to cut down on student loan debt and defaults. John O'Connor/WLRN hide caption
President George W. Bush, seated, signs No Child Left Behind into law at Hamilton High School in Hamilton, Ohio. Ron Edmonds/ASSOCIATED PRESS hide caption