If you can write a test (or other combination of measurements, metrics etc) that actually measures whether someone is well educated, and tells us how much of th

If you can write a test (or other combination of measurements, metrics etc) that actually measures whether someone is well educated, and tells us how much of that is down to the teacher and not the overall school, family, home life, culture, etc, and cannot be gamed etc, then you will have solved one of the worlds longest standing social issues. Then you will just need to convince people to vote to (more than) double what we pay teachers (and eat the resulting tax rises) to fund the resulting bonuses for at least some of them. Clearly grades are worthless here. But that doesn't mean there is a better system. Especially given what people are willing to pay and the complex other inputs...