Look I understand math pretty well. I like math and tend to get excited about the nitty-gritty details about what is happening and how to teach it at a very granular level.
I am not an English teacher I don’t get excited by the granularity of the mechanics of writing I just do it. Examining student work for the exact level they reached and teaching to that exact level is not fun and tends to be a lot of work
Should our teaching be all about drilling down using data to find out exactly where students are deficient and correcting that? Does that take all the art, all the love out of teaching? Is it possible that the tests are that accurate? Do I need a test to tell me that information?