9 questions parents have about delta and schools, answered by experts

This fall, millions of families across America are embarking on the most stressful back-to-school season since — well, last year.

It’s not that things aren’t different now. Most notably, we have vaccines available for people 12 and older that dramatically reduce the risk of death and serious illness from the virus. And while large numbers of students started last school year learning remotely, this fall nearly all districts are welcoming kids back to classrooms.

But a lot of things are, depressingly, the same. The virus is far from gone, with the delta...