When you tie metrics to financial rewards, people are going to game the metrics. https://www.washingtonpost.com/news/answer-sheet/wp/2015/04/01/how-and-why-con

When you tie metrics to financial rewards, people are going to game the metrics. https://www.washingtonpost.com/news/answer-sheet/wp/2015/04/01/how-and-why-convicted-atlanta-teachers-cheated-on-standardized-tests/ https://www.washingtonpost.com/news/answer-sheet/wp/2015/04/...