During a pandemic that calls for distancing, students are still clustering for school safety drills. Should they?

Right now, students stand at the center of two issues that have officials concerned: The Delta variant of the virus and other respiratory illnesses are causing beds to fill at children’s hospitals, and school shooting experts have warned that the mental health challenges for young people that were exacerbated by the pandemic could create a “powder keg effect” now that students are back in schools. Already, the school year has...