This commentary discusses three essential themes in performance assessment and its scoring. First, scores should mean something. Second, performance scores should permit fair and meaningful comparisons. Third, validity-reducing errors should be minimal. Increased attention to performance assessment may overcome these problems. (SLD)

Reports on an ongoing evaluation of the Vermont portfolio assessment program. Indicates that the positive news about the instructional effects of the assessment program are in contrast with the empirical findings about the quality of the data the program has yielded. (SLD)

Explores the relationship between measurement theory and practice, considering five broad categories of: (1) models, assumptions, and terminology; (2) reliability; (3) validity; (4) scaling; and (5) setting performance standards. It must be recognized that measurement is not an end in itself. (SLD)

One means of establishing the validity of performance-based assessments is to determine whether the criteria for basic competencies on performance tests are reasonable in relation to expected (nationally normed) age-level performance. Links between performances on three assessments in Michigan and the Comprehensive Tests of Basic Skills illustrate…