Warning: the audio version of this story contains strong language.
Mandy Cooke was a sophomore at Columbine High School in Littleton, Colorado in 1999, when two students opened fire at the school, killing 13 people and themselves.
Mandy later became a teacher back at Columbine.
At StoryCorps in Denver, Mandy sat down with Paula Reed — her former teacher from Columbine — to talk about the two decades that followed, and the lasting impact of the shooting.
Originally broadcast May 27, 2022 on NPR’s Morning Edition.