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Center on Standards and Assessments Implementation, 2018
Reliability is a measure of consistency. It is the degree to which student results are the same when they take the same test on different occasions, when different scorers score the same item or task, and when different but equivalent tests are taken at the same time or at different times. Reliability is about making sure that different test forms…
Descriptors: Test Reliability, Test Validity, Student Evaluation, Test Bias