Summer Learning Institute 2026

Dr. David Diehl is the CWA Program Administrator for the Sanger Unified School District. Before 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 detention facility in Central California. He has worked extensively with system-involved youth in court, community day schools, and other alternative educational settings. He is a proponent of data-informed interventions before the 6th grade and provides educators with increased awareness of the lives of street-socialized students from marginalized communities. He believes this approach can improve student engagement, increase resilience, and impede future incarceration.