The risk to the majority of dying from this is really small, people who ride motorbikes for example have a higher risk of dying in a road accident.
It's not just about dying. Did you read the Guardian article where a professor in infectious diseases explains that quite a high proportion (estimated at 1 in 20) develop long lasting health problems with Covd- he compared it to dengue fever? And the new development with small children developing Kawasaki disease?
Of course we are going to have to open up eventually, but there seems little reason to believe that we are at the stage in the pandemic in this country where that would be a good idea. We are behind on testing, tracing and PPE.
The people pushing us to do so are the same people who told us no infection could possible be spread by Cheltenham- that ended well, didn't it?
I am all for the (controlled and gradual) ending of lockdown when the independent expertise of the top immunologists and experts in pandemics tell us it is the right thing to do.
But whatever happens it should not be guided by the whining of teenagers.
And if you (anyone, not you specifically, OP) can't control your own teens enough to stop them from leaving the house and going goodness where, how do you expect a small number of teachers to stop them from indulging in unsafe behaviour in the classroom, on breaks, in the loo?