How well test performance predicts attainment in the subject at a later date.įor a test to be valid, it must also be reliable (it is possible, however, for a test to be reliable and not valid).The extent to which aspects that may be irrelevant to performance of the skill in question have been removed or minimised – such as the reading demand of a maths test.How well test performance matches expectations based on evidence available from other relevant sources. ![]()
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