If kids are absent, teacher opens up zoom
Most teachers have a zoom room that they open up if students aren’t present in the classroom. If they are online, teachers have classes. If not, teachers can close it and mark them absent.
As teachers faced pupils in quarantine during the covid-19 period, they invented a new attendance code, "PZ", for the present in the zoom, so that attending virtually would not count against students. Students are absent for a variety of reasons, and allowing them to return to class without expecting an explanation allows them to take a deep breath and learn without worrying about what to say to their peers or the teacher.