I would like to know what is meant by “safe”, which can only ever be a relative term because nothing is 100% safe and the world is full of risks.
This is a really good point, we have a situation where the risks aren't really known or easily quantifiable, and the impacts on individual people seem to vary wildly. Some people only have minor symptoms, others are laid low for weeks on end - and for children who develop Kawasaki disease it can be extremely concerning.
https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(20)31129-6/fulltext
There is a big challenge trying to set an acceptable risk level that most people would see as reasonable. Each of us have a different perspective on risk, and may even be a variance between the risk we are prepared to accept for ourselves and those that we think others should accept.
The way through this has to be through discussion and negotiation rather than simple oppositional posturing, but I do think it would be unreasonable to expect teachers, parents, and children to take on a degree of risk that we would find unacceptable for ourselves.
