Vancouver and many other districts around the country have turned to technology to monitor school-issued devices 24/7 for any signs of danger as they grapple with a student mental health crisis and the threat of shootings.

Some Colorado schools use facial recognition cameras to track students in real time. A proposed state bill seeks to regulate the technology amid growing debate over its impact on safety and student privacy.

Three districts have discussed possible closures in the past week. Here's how their respective leaders are communicating their plans.

Two recent school shootings are highlighting what extremism researchers see as a growing—and poorly understood—trend among young people who embrace mass violence.