In March 2020, as the coronavirus engulfed America, Kristen Wrobel got the news: “We heard on Friday that there would be no school for two weeks. Which just turned into no school.”
That was the last time her children — one in third grade, one in first — were in a classroom.
In the beginning, they did the remote-school thing. Wrobel, a 42-year-old stay-at…

