[quote AnInspectorBores]@LadyIckenham
there's a long article in the Times today (behind a paywall, or I'd link) about what would have happened if we hadn't locked down. One of the points made by the journalist was that school children were not significant drivers of infection until Delta arrived in 202l, and that cases fell in November 20 despite schools being kept open.
And yet the ONS survey published in the week before Christmas found that education staff are 37% more likely to be infected by Covid than the general public 
We knew. We knew. And yet many continued to vilify us as workshy lefties.[/quote]
uhuh (agreeing with you)
There was a lockdown in November 2020. It would be surprising if cases didn't fall in a lockdown. That doesn't mean that schools don't transmit infections to at least some degree.
There was always transmission in schools, children were always susceptible to covid, thank goodness though at lower risk than adults. There was a lot of nonsense expounded about that, some of it by so-called experts.
It's a fairly meaningless argument about what a "significant" driver of infection is. Infections always have been transmitted through schools; if every other section of community is protected from infection by mitigations and vaccinations, but not children, then the role that schools play in the transmission of infections will become more dominant.