Researchers have raised a number of questions about whether student achievement data can be used fairly or accurately for purposes of teacher evaluation. Others have noted that achievement data alone cannot provide teachers with the information they need to improve their practice. Recognizing these limitations, the federal government and many…

This study elaborates the "what works?" question by exploring the effects of variability in program implementation quality on achievement. Particularly, the effects on achievement of computerized assessment of reading were investigated, analyzing data on 51,000 students in Grades 1-12 who read over 3 million books. When minimum implementation…

The results of an evaluation of Vermont's statewide assessment initiative are presented, with information about the implementation of the program, its effects on educational practice, the analytic challenge presented by the portfolio scoring process, the reliability and validity of portfolio scores, and the tensions between assessment and…

Five papers presented at a symposium during the 1991 annual conference of the National Council on Measurement in Education explore the design, development, and implementation of the Texas Master Teacher Examination (TMTE) Program. Educational policymakers have begun to maintain that the professionalization of teaching can be substantially…