Teaching to the test is so much work, the smart teacher will just lobby administration to get the weaker students removed from the class. https://fredrikdeboer

Teaching to the test is so much work, the smart teacher will just lobby administration to get the weaker students removed from the class. https://fredrikdeboer.com/2017/03/29/why-selection-bias-is-the-most-powerful-force-in-education/ https://fredrikdeboer.com/2017/03/29/why-selection-bias-is-t...