Teachers will attempt to cheat the system  Cheating is inevitable in any bureaucratic system that holds educational institutions accountable- in any way- for the outcomes of the educational processes that they supervise.  Teachers will have an incentive to cheat the system, for example by altering students' test results or giving them easier tests. [1] On a more 'macro' scale, teachers will have an incentive to only want to teach at 'good' schools with 'advantaged' students who have both the will and the ability, because their chances of a good performance there are higher.  [1] Jacob and Levitt, “Prevalence and Predictors of Teacher Cheating”, 2003