Testing and recording what students know and can do in a subject has always been part of our education system, especially in secondary schools where teachers simply cannot hold in their head accurate information about the hundreds of students they encounter each week. However, measuring progress – the change in attainment between two points in time – seems to be a rather more recent trend. The system – headteachers, inspectors, advisors – often wants to measure something quite precise: has a child learnt enough in a subject this year, relative to other children who had the same starting point?
The talks I have given recently at ResearchED Durrington and Northern Rocks set out why relatively short, standardised tests that are designed to be administered in a 45-minute/one hour lesson are rarely going to be reliable enough to infer much about individual pupil progress. There is a technical paper and a
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