As the sun set on a recent evening in Rutherfordton, N.C., the author Beth Revis drove her green S.U.V.
into the parking lot of a closed elementary school and connected to the building’s free Wi-Fi. Then, for the third time since the coronavirus pandemic had taken hold, she taught a two-hour writing class from her driver’s seat.
Ms. Revis, 38, held a flashlight to her face with one hand. In the other, she held a selfie stick with her smartphone attached, looking at the device to speak to her students.