Classical test theory is based on the concept of a true score for each examinee, defined as the expected or average score across an infinite number of repeated parallel tests. In most cases, there is only a score from a single administration of the test in question. The difference between this single observed score and the underlying true score is…

The short-term (45-day) stability of the Adjustment Scales for Children and Adolescents (P. McDermott, N. Marston, and D. Stott, 1993) was studied with 51 first and fifth graders, seven of whom were classified as "exceptional/disabled." Significant test-retest reliability coefficients were obtained, and mean differences from test to…

This paper describes the feedback included in operational achievement level setting (ALS) procedures for the National Assessment of Educational Progress (NAEP). It does not describe the feedback form field trials, pilot studies, or other research studies related to the NAEP. The NAEP ALS process includes three rounds of item-by-item ratings, and…

Research studies using booklet classification were implemented by the American College Testing Program to investigate the linkage between the National Assessment of Educational Progress (NAEP) Achievement Levels Descriptions and the cutpoints set to represent student performance with respect to the achievement levels. This paper describes the…