April is a hard month for Paula Reed — even though it has been 19 years.
April 20 is the anniversary of the Columbine massacre. That day in 1999, two Littleton, Colo., high school students killed 12 students and one teacher before killing themselves.
Reed was a teacher at Columbine High School school that day, and still is today. This week, she spoke to NPR from the same classroom she was teaching in before everything happened.