The Silver Bullet Machine
Manufacturing Company Limited
Intelligent Innovation Consultancy
June 21, 2019
Over the last few weeks, I've been working on a document that tells the full story about grade (un)reliability, including
* why grade reliability matters
* the problematic nature of the quest for the 'right' mark
* the distinction between 'accuracy' and 'reliability'.....
October 28, 2018
For many months now, the website of Pearson, the owners of the edexcel examination board, has been boasting that “99.2% of our grades were accurate on results day”, a claim Pearson have been using to boost their marketing.
This claim is wrong. And it is amazi...
Grade (un)reliability - the full story
Visualising grade (un)reliability
December 6, 2018
No, Pearson. 99.2% of your grades were not accurate
Biting the poisoned cherry - why the appeals process for school exams is so unfair
Teachers behaving badly!
September 2, 2017
How reliable are GCSE and A level grades?
August 21, 2017
How to make GCSE and A level grades reliable
Why reducing emissions is a good thing to do, but not the right thing to do
May 20, 2017
Are regulators doing the wrong thing?
May 15, 2017
A fairy tale for our times
May 11, 2017
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