They get it all wrong. In an increasingly online society, this is a nice way to keep the parent-teacher conferences interesting.
But seriously, I don’t get the problem with sex work. It’s not like that’s in any way shape or form relevant for her teaching capabilities. Sex does not become immoral just because you point a camera at it and all these people had to have sex to have children in the first place. Where’s the outrage about children living with their parents? These monsters have sex with each other! Some even while the children are at home!