Earlier quoted context omitted.
Why would we expect schooling to get…cheaper? The vast majority of the cost is hiring teachers. It should be staying in line with inflation or even increasing.
>The vast majority of the cost is hiring teachers. It should be staying in line with inflation or even increasing. Only if you assume if per-teacher productivity can't increase.
It can't.
The only axis upon which teacher "productivity" could increase is by increasing the size of their classes.
Every study and every practical example of doing that ever done shows that it negatively impacts student outcomes.
Not because the teacher is failing to be whatever it is you imagine "more productive" to be but because there is a minimum amount of attention needed per student for them to not fall through the cracks and one person's attention is not scalable.