When Sarah Lerner walked into her classroom on Friday, she felt like time had stood still.
Abandoned quizzes sat on her students’ desks. Their backpacks were scattered around the room and cell phones plugged into electrical outlets. The date was still on the board: Feb. 14.
It was the first time she’d been to Marjory Stoneman Douglas High School since that day, when she sheltered 15 students from a shooter who opened fire in the hallways. Seventeen people died, and more than a dozen others were injured.