If we could the quality of teachers with the precision that we measure baseball players, then yes, the best teachers could make millions teaching the children of the super-rich. Additionally, colleges would pay a premium to have the top teachers if they were measured by a universally acknowledged standard. You have to remember that there would only be a few hundred of them.

I also expect that if you could educate a child with the best teachers, you would reliably get very effective adults.

History is littered with geniuses whose students went on to make groundbreaking discoveries as well.