Difficult to comprehend really

[nzoomed]

All of it? So you disagree that the risk of children being badly affected by covid is extremely low, and you disagree that the majority of those children who are badly affected have underlying health conditions?

Your correct in that the risk of children being affected is low, however the main risk I can see here would be the children giving the virus to the (unvaxxed) teacher, since they are typically under 12 years and dont qualify for the jab, the risk of them spreading the virus between each other in the class is high with a very high probability of the children being asymptomatic and unlikely to stay home if infected.