Communicative oral language tests have claimed high content validity, but have also elicited concern that the assessment scales are based on theory with little empirical justification. A new approach to construct validity can be found in discourse analysis, which could lead to the development of new communicative discourse tests in all skills. (CB)

Schilling et al. (this issue) have done a commendable job in illustrating a comprehensive process of validating assessments of teacher knowledge (and, more broadly, other types of tests as well). On one hand, the concrete illustration of a process that often remains murky and incomplete is profoundly heartening, as it provides a rigorous model for…

This reply to William A. Mehrens argues that test validity is the central issue in discussing the appropriate role of tests. It states that the procedures used to establish the validity of tests are inadequate because they depend primarily on content validity and not on construct and criterion validity. (JAZ)

Teacher knowledge has been of theoretical and empirical interest for over two decades, and development of measures is overdue. The researchers represented in this volume have been breaking new ground by developing a measure of mathematical knowledge for teaching (MKT) without guiding precedents, and in the face of differing perspectives on teacher…

Operating from multiple literature bases in cognitive psychology, mathematics education, and theoretical and applied psychometrics, Schilling, Hill and their colleagues provide a systemic approach to studying the validity of scores of mathematical knowledge for teaching. This system encompasses an array of task formats and methodologies. The…

Standardized tests often produce results that are inaccurate, inconsistent, and biased against minority, female, and low-income students. Such tests shift control and authority into the hands of the unregulated testing industry and can undermine school achievement by narrowing the curriculum, frustrating teachers, and driving students out of…