It’s one of the fascinating paradoxes of education that the more you teach to standardized tests, the worse test results tend to be. Improved test scores are a byproduct of strong teaching - they shouldn’t be the only focus.
Teaching is every bit as much an art as it is a science and straight-jacketing teachers with canned curricula only results in worse test scores and a deteriorated school experience for students. I don’t understand how there are admins out there that still operate like this. The failures of No Child Left Behind mean we’ve known this for at least a decade.