Dr. David Diehl is the Director of Student and Community Services for the Selma Unified School District. He was previously a Coordinator of MTSS and an Assistant Principal for the Monterey Peninsula Unified School District. Prior to entering education, he spent 24 years in law enforcement, retiring as a police sergeant. His Doctoral research was inspired by the 21 students he lost to gang related homicides while a teacher in a Central California court school. He has worked extensively with system involved youth in court schools, community day schools, and other alternative educational settings. He is a proponent of data informed interventions prior to 6th grade, along with providing educators with increased awareness into the lives of street socialized students from marginalized communities. He believes this approach can improve student engagement, increase resilience, and impede future incarceration. He has a passion for developing systems that address teen drugs from a treatment based approach. Inspired by his daughter who is a recovering addict who has struggled with substance abuse since her teens, he is committed to educating others on this very important topic.