As the COVID crisis has put many ideas about online education into practical experiments at breakneck rate and mass scale, one fairly predictable issue came out - a disturbingly large part of the value of in-person presence of students and teachers in one room isn't the often brought up point of "being able to ask the teacher to explain", from personal experience its hardly popular in classrooms even on a good day, but mundane and a bit disappointing (about the state of culture and society) fact that its making the people involved pay at least some attention - even in university and most disturbingly, not just mere students but also doctoral researchers. And of course this problem is a whole order of magnitude worse at lower grades, in mandatory education with not so adult students. Plenty of samples of the issues cruise around the social media - students trolling, playing videogames or generally not giving a damn about the "online education" in other more and less creative and hilarious ways.
Depending on the choice of sample with these, seems like between 30% to 90% (with more "troublesome" and low achieving populations) of a teacher's job in a classroom is actually making sure that the students at least pretend to be doing what they are supposed to be doing and not doing things which they aren't supposed to be doing; as the teacher's capability to perform this role is severely reduced in online courses, it shows in results and common complaints by teachers and parents (and the complaining is plentiful).
