9/11 rattled Arlington Public Schools. 25 years later, it’s ‘history’

For Arlington Public Schools, 9/11 hit especially close to home. Many teachers and students had loved ones in the Pentagon, where 184 of 2,977 victims were killed. But 25 years later, students have no memory of 9/11, and their teachers face a challenging task: reframing the harrowing day they endured as history.