"Yet, that fleeting hour where the children are involved and interested, where they're expanding skills that aren't immediately obvious, like their ability to argue a point or their confidence in a group, isn't down on paper and isn't measurable so it's not counted."
Yes, we're back to the technocratic problem of only assessing that which can be measured and the well-known ways that fucks up incentives and loses the entire point of many tasks.
The thing is though, those things that aren't measurable, are perceptible, so parents and children and other teachers do KNOW how children are doing.
I would have thought parents would be your allies in this. I couldn't give a crap what Ofsted scores a school has, but I will care very much about whether my child learn to argue a point well, gains confidence in a groups, etc. And that is something knowable, even if not measurable.
Sorry, I know I'm preaching to the choir here. But the main thing I would want changed about schools is the obsession with measuring the irrelevant and the way that is skewing schools towards gradgrandian nightmares.