chapter  12
24 Pages

Issues, Strategies, and Procedures for Applying Standards When Multiple Measures Are Employed: Joseph M. Ryan

The evaluation of student knowledge and ability employing a variety of assessment

procedures has been advocated in measurement theory and ignored in measurement

practice for decades. Traditional belief about the value of using multiple measurements is

reflected in a chapter by Mehrens (1990) on combining evaluation data from multiple

sources when making decisions about teachers. Mehrens wrote, “In general, the more

data that are gathered, the better the decision is likely to be. Certainly it is conventional

psychometric wisdom that one should use more than one piece of data as the basis for

important decisions” (p. 332).