Dewey Cornell, Ph.D. holds the Virgil Ward Chair as Professor of Education in the School of Education and Human Development at the University of Virginia. He became interested in the prevention of youth violence in the 1980s when he worked as a forensic clinical psychologist evaluating and treating violent offenders. After contributing to the FBI study of school shootings in 1999, he led the development of school threat assessment guidelines in Virginia, now called the Comprehensive School Threat Assessment Guidelines (CSTAG). Author of more than 300 publications in psychology and education, Dr. Cornell’s career has focused on school safety and the prevention of youth violence. With funding from the U.S. Department of Justice, he has conducted a series of studies over the past 25 years on the safety and effectiveness of behavioral threat assessment and management in schools. In 2025 he received the Distinguished Contributions Award from the Association of Threat Assessment Professionals.