What we need to be thinking about is the way school is organised in order to prevent the spread of the virus so that schools remain open
Exactly this with bells on!
The assumption here and in places like the DM, is that teachers complaining about the guidance, government, articles and so on about schools reopening is because they don't want to go back.
The complete opposite. We can't and won't stay open if we can't control infection and transmission effectively.
We genuinely don't know what transmission is in the U.K. in schools (larger class sizes, less outdoor teaching, varying classroom sizes) nor between primary and secondary.
Barely anyone was being tested in March - April unless presenting at hospital. Even less so asymptomatic children and teens. No contact tracing then. It's not even up to full operation yet.
The government have a few studies ready to start in sept.
The government knows all this and is undoubtedly using the media to help keep the faith.
Teachers have a level of intelligence and inside experience to know wtf is going on. Why does no one listen to them? Or scientists who say the same?!