An investigation of the effect on the difficulty value of an item due to position placement within a test was made. Using a 60-item operational test comprised of 5 subtests, 60 items were placed as experimental items on a number of spiralled test forms in three different positions (first, middle, last) within the subtest composed of like items.…

The influence of anchor length on the accuracy of test equating was studied using Tucker's linear method and two Item-Response-Theory (IRT) based methods, focusing on whether equating accuracy improved with more anchor items, whether the anchor effect depended on the equating method used, and the adequacy of the inclusion of the guessing parameter…

In light of the widespread use of competency testing, the authors consider that it is important to determine ways of developing and using competency testing to insure that it achieves its full potential. The paper, in three parts, introduces a model for the development and validation of competency tests, reviews several methods for setting…

The legislation mandating Louisiana's Basic Skills Test was consistent with federal legislation in specifically including special education students. The development of policy alternatives for the testing of these students, however, was a complex process. Related issues include: (1) inclusion/exclusion of special education students, (2)…

The purpose of this paper, which is drawn from a larger analytic history of the National Teacher Evaluation (NTE) program, is to investigate issues of validity within the context of the program's 50-year history. Three major findings emerge from historical considerations relating to: (1) the continuity of test content and justification over the…