I am not aware of "clear-cut" evidence that masking in schools work in fact that's the entire point of the article in question here so if you have some silver bullet that debunks all the authors claims than you should absolutely share it.

as other comments have said, why are we so obsessed with minimizing transmission as much as possible, seemingly regardless of cost or any other incidental negative outcomes, at this point in time? these are all things that made sense early on when we didn't know much and everyone was kind of panicky and the death counts were higher and the misinformation from China was prevalent.

but now in twenty twenty two, we can't just mandating things in order to reduce transmission of a respiratory virus, without considering what other nth-order effects said mandates will have. it's pure irresponsibility as the result of prescribed dogma.