Therese Gachnauer, center, an 18-year-old senior from Chiles High School and Kwane Gatlin, right, a 19-year-old senior from Lincoln High School, both in Tallahassee, join fellow students protesting gun violence on the steps of the old Florida Capitol in Tallahassee, Fla. Mark Wallheiser/AP hide caption
School students from Montgomery County, Md., in suburban Washington, rally in solidarity with those affected by the shooting at Marjory Stoneman Douglas High School in Florida, at the Capitol in Washington on Wednesday. J. Scott Applewhite/AP hide caption
Used car salesman Chris Edwards poses for a portrait at Automaxx in Pleasant Grove, Utah. Trevor Christensen/KUER hide caption
People visit a makeshift memorial outside Marjory Stoneman Douglas High School in Parkland, Fla., where 17 students and faculty were killed in a mass shooting on Feb. 14. Gerald Herbert/AP hide caption
A woman looks at 15 crosses posted on a hill above Columbine High School in Littleton, Colo. in remembrance of the 15 people who died during a shooting rampage at the school in 1999. Eric Gay/AP hide caption
DCPS Chancellor Antwan Wilson has resigned amid ongoing graduation issues and after news emerged that he had improperly transferred his child from one highly desired school to another. Astrid Riecken/The Washington Post/Getty Images hide caption
Students use their phones following the shooting at Marjory Stoneman Douglas High School in Parkland, Fla. Michele Eve Sandberg/AFP/Getty Images hide caption
When Dustin Gordon arrived at the University of Iowa, he found himself taking lecture classes with more people in them than his entire hometown of Sharpsburg, Iowa, population 89. Ben Smith/The Hechinger Report hide caption
