The effects can be devastating on students, but the right interventions and responses from districts and educators can make a difference.

In his letter of resignation from Wisconsin's Oconomowoc Area School Board, Rick Grothaus said its work had become "toxic and impossible to do."

Schools must balance two complex issues—safety and privacy—as they look to technology to help them identify students who are suffering a mental health crisis or threatening self-harm.

Mental health professionals and doctors around the globe are warning that after more than a year of stress, isolation, grief, and fear, students will not simply spring back into school.