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The Silver Bullet Machine 

Manufacturing Company Limited 

Barnsdale Grange

The Avenue

Exton

Rutland

LE15 8AH

UK


 

+44 (0) 1572 813 690

+44 (0) 7715 047 947

dennis@silverbulletmachine.com

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'.....

December 6, 2018

On 27th November 2018, Ofqual published some important measures of the reliability of GCSE and A level examinations in 14 subjects - “reliability” being defined by Ofqual as “the probability that the grade as awarded is the same as the grade that would be awarded had t...

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September 2, 2017

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