“Parents don’t like the idea of standardized testing, so finding out the PL means test after test, day after day, does not play well in the market.
So instead, what you actually get is a software, computers, algorithm-selected teaching, teachers who aren’t really teachers any more, and school leaders who think this is a way to put 100 students in a single classroom (which is what the oxymoronic “personalized learning at scale” means).