I have said it before, and I will say it again. Giving letter grades to schools is stupid. How would you feel if your child came home from school with only a single letter grade? If you are a parent, you would be furious. Rightly so. Every child has strengths and weaknesses, is good at this, not so good at that, getting better at this, not interested in that. Can you sum up a child as an A child, a B child, a C child, a D child or an F child? I don’t think so.

Yet, following the bad ideas spun out of Jeb Bush’s brain, red states have adopted the letter grading strategy for entire schools. Schools that have strengths and weaknesses, areas in which they are doing magnificently, and areas where they can improve. Every school consists of millions of moving parts, yet the letter grade assumes…