In-Person Schooling and Juvenile Violence

 While investments in schooling generate large private and external returns, negative peer interactions in school may generate substantial social costs. Using data from four national sources (Uniform Crime Reports, National Incident-Based Reporting System, National Crime Victimization Survey, National Electronic Injury Surveillance System) and a variety of identification strategies, this study comprehensively explores the effect of in-person schooling on contemporaneous juvenile violence.

 Using a proxy for in-person schooling generated from anonymized smartphone data and leveraging county-level variation in school calendars — including unique, large, localized changes to in-person instruction during the COVID-19 pandemic — the authors find that in-person schooling is associated with a 28 percent increase in juvenile violent crime. 

The effects are largest in larger schools and in jurisdictions with weaker anti-bullying policies, consistent with both concentration effects and a peer quality channel. Back-of-the-envelope calculations suggest that relative to closed K-12 schools, in-person schooling generates $233 million in monthly violent crime costs.