The seven chapters of this issue focus on technical qualities of performance assessments and report the findings of systematic empirical inquiries. They add to the body of research that shows that performance assessment, although time consuming and expensive, merits the serious attention of educators. (SLD)

Standardized achievement tests are often misused as indicators of a school's quality or effectiveness relative to other schools. This is an incorrect use because it ignores variation among schools in student abilities, family support of education, student mobility, and other factors. People also misuse tests because they impute to them more…