Social Welfare Professor Ron Avi Astor spoke to the Santa Rosa Press Democrat after a 16-year-old student was stabbed to death during a classroom fight at a Sonoma County high school. While the nation has seen an increase in mass shootings on campuses, school violence more broadly has declined by more than 50% over the past two decades, Astor said. But he added, “Our norms are that this shouldn’t happen at all. No child should be killed by going to school.” Research on school violence often focuses on firearms, not knives and stabbings, he said. “It’s a concern because almost every child has access to a knife.” Tracking and analyzing data is key to understanding what interventions and policies work, said Astor, whose research has shown that providing schools with resources including school psychologists, restorative justice programs and more extracurricular opportunities for students has helped reduce day-to-day violence on campuses across California.