Precisely correct.
I had a professor in college who went into excruciating detail on how ineffective standardized tests are: They don't correlate with GPA, they don't measure either content knowledge or critical thinking skills, and they don't predict success in college or the workplace. The only thing standardized tests predict with any accuracy, or so said he, is how students will do on other standardized tests.
Naturally, our State Legislature wants to tie teacher salaries to student results on standardized tests.