After an emergency event has occurred on campus and the education agency has activated the emergency operations plan (EOP), it is likely that the planning team has feedback and lessons learned. Similarly, after conducting an emergency exercise -- whether it be an orientation, tabletop exercise, drill, functional exercise, or full-scale exercise -- the planning team, the response team, community partners (if they participated), and/or other members of the whole school/campus community are likely to have reflections on the successes and/or challenges of the exercise. This information is critical to strengthening, maintaining, and refining the EOP. But how are the feedback and reflections captured, so that the EOP can be improved? The planning team can debrief together after the emergency event or exercise and create an after-action report that evaluates results, identifies gaps or shortfalls, and documents lessons learned. This fact sheet provides an overview of after-action reports, best practices, and additional resources.