An overview of educational evaluation literature is followed by summaries of research on both the perceptions of school principals about their awareness and use of evaluation in decision-making and their evaluation behavior. New lines of research on evaluation for decision-making as a learning process are offered. (MLF)

Methods of probability modeling to analyze rater agreement are described, emphasizing their basic similarities and viewing them as variants of a common methodology. Statistical techniques for analyzing agreement data are described to address questions such as how many opinions are required to make a medical diagnosis with necessary accuracy. Kappa…