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Grade (un)reliability - the full story
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'... * ... and how grades can be unreliable even when marking is technically perfect * the 'lottery-of-the-first-mark' * the inherent 'fuzziness' of all marking * how to measure fuzziness * the evidence abo
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