What are they, what do they do and where do they live?

Dylan Wiliam



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 ...

Get Routledge International Companion to Education now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.