> However, if the market chooses the testing procedures, it will reward metrics which are harder to game. How would you achieve this? > This would take severa

> However, if the market chooses the testing procedures, it will reward metrics which are harder to game. How would you achieve this? > This would take several iterations (read: many years) to stabilize, but it should converge on some sort of solution. What makes you think this? Markets aren't immune to fashion and fad. We don't see stable financial markets, why should we see stable markets in education?