Arguments against competency testing surface continually, and classic counter-arguments reoccur. Nevertheless, minimum competency testing and other accountability efforts have much public support. Those claiming that the tests are not relevant or do not have predictive validity, also say they are coachable and biased. Answers are given to these…

The nature and common uses of standardized achievement tests are described and placed in context in order to evaluate claims and criticisms that are commonly made. Tests are described as samples of behavior and hence subject to sampling errors. Much of the debate is dominated by emotion and prejudices. There is very little empirical evidence about…