Diagnostic judgments are often based on the comparison of two measures in order to judge whether the individual shows a genuine discrepancy in the traits or characteristics that the two measures represent. Until a perfect psychometric battery comes along, psychometricians can offer some guidance on the level of confidence to be placed in…

An analysis of SAT-9 scores since passage of Proposition 227 indicates that scores increased for all students, not just for English-learning students; scores increased for most districts regardless of the programs implemented; it was not possible to isolate the impact of Proposition 227; and SAT-9 is not an appropriate measure for assessing…

The purposes of this study were to compare student, school, and group average distributions of two standardized tests, the Iowa Tests of Basic Skills (ITBS) and Stanford 7 Plus Achievement Test, and examine the American College Testing Programs college entrance examinations (Grades 11-12). In addition to the student-school norm comparisons, ratios…

In 1983, four screening tests for assigning students to the appropriate levels of the Stanford Achievement Test, Seventh Edition, were developed with a national sample of hearing impaired students. While students are normally assigned to one of six test level booklets according to grade, this is inappropriate for certain students. This paper…

This paper argues that the standard "When it is expected that a test will be used to make norm-referenced assessments of groups rather than individuals, normative data based on appropriate group statistics should be provided," which was considered secondary in the 1985 "Standards for Educational and Psychological Testing" and…

The Anchor Test Study (ATS) yielded equating tables for vocabulary, reading comprehension, and total reading scores for eight commonly used reading tests at the 4th, 5th, and 6th grade levels. Because of the original ATS sampling design which resulted in a nationally representative sample of school children at those grades, the equating tables…

Both on-level and out-of-level tests were administered to third and fifth grade children in order to compare the scaled scores of different level tests of the same testing program and to discover whether the relationship between levels might be distorted by ceiling or floor effects. Only reading tests were used in this study. The Stanford…