notevenat20, Why are you so determined to believe and promote the idea that there is no problem in schools when the very people on the ground who know what conditions are like, are telling you over and over again? What is your agenda?
There are a few issues here. Let me try to break them down.
Before schools reopened in September or just after they reopened it made sense to talk about the safety conditions in schools and to try to predict the effect on covid transmission. Personal experience of schools was hugely relevant. Now that schools have been open for months it has turned into a statistical question to try to work out if teachers have indeed been infected at a much higher risk than...well this is also tricky but... a reasonable comparator. We no longer have to look at school conditions and guess what the likely outcome might be.
The question of who to compare teachers to is the sort of thing statisticians love to study and I will leave it to them.
But one helpful related question is if parents of the children themselves have a different infection rate than either the teachers in the schools or other non-parents.
Internationally a number of related studies have been done but each can be dismissed because of the difference between the schools systems or just national cultures.
For those who take that line, this leaves us only with UK based studies and this is then of course much more limited.
In terms of agenda this is a term often used on MN and to be honest I am not sure I understand what is meant by it. If I were selling a product I could see what it might mean. But otherwise, is it just a synonym for "opinion"?