Florida’s Department of Education rolled out its much-anticipated teacher evaluation reports, and only hours later, withdrew them. Most teachers were rated effective or highly effective, but the reports had numerous errors.

At some point, after hundreds of millions of dollars have been wasted trying to standardize a process that requires human judgement, after thousands of excellent teachers have abandoned a profession they once loved, someone will finally admit that this nutty idea doesn’t work. A chorus will grow from sea to shining sea: teacher quality can’t be judged by student test scores.