The mass casualty shooting at Marjory Stoneman Douglas High School (MSD) on Feb. 14, 2018, resulted in 34 people staff and students being shot, and 17 losing their lives. In the wake of this shooting, The National Police Foundation conducted an extensive review and completed a comprehensive report that shares lessons learned and recommendations that can help school districts and public safety agencies prevent, or better respond to, any future school shootings. This presentation walks through this tragic event and discusses these hard learned lessons. We will talk about the need to focus on prevention, the actions inside and outside of Building 12, that saved or cost lives, and the multi-agency police response that has resulted in several terminations for neglect of duty, and even a criminal charge against the School Resource Officer assigned to the school. This is an impactful  presentation that will provide new and relevant insight for anyone connected to school safety.