What are they, what do they do and where do they live?
Three school districts use the same mathematics test for assessing the achievement of students at the end of a school year in order to decide whether they have made sufficient progress to move on to the next grade. In this test, a mark of 50% has traditionally been regarded as indicating that a student should be allowed to progress, and a mark of below 50% indicates that the student needs to repeat a grade.
In school district A, the proportion of students achieving the notional ‘pass mark’ of 50% rose in the last year from 90% to 95%. In school district B, they have decided that a mark of 50% is not really adequate for further study, and so this year ...