Screening items for parameter drift helps protect against serious validity threats and ensure score comparability when equating forms. Although many high-stakes credentialing examinations operate with small sample sizes, few studies have investigated methods to detect drift in small sample equating. This study demonstrates that several newly…

Equating is an essential tool in educational assessment due the critical role it plays in several key areas: establishing validity across forms and years; fairness; test security; and, increasingly, continuity in programs that release items or require ongoing development. Although the practice of equating is rooted in long standing practices that…

This comprehensive "Handbook" focuses on the most used polytomous item response theory (IRT) models. These models help us understand the interaction between examinees and test questions where the questions have various response categories. The book reviews all of the major models and includes discussions about how and where the models…

Discusses the use of scaling test scores for an algebra class. Provides example data, several equations used in scaling, and graphs. (YP)

The Anchor Test Study Manual was reviewed with the practitioner in mind. It represents an effort to equate and standardize eight commonly used elementary reading tests. Possibilities and limitations in using the manual are discussed. (BJG)

The gap-reduction model has been identified as a potential alternative to or extension of the Title I Evaluation and Reporting System (TIERS). The gap-reduction model has been recommended for the evaluation of bilingual programs, but has only recently been given consideration for evaluating local Chapter 1 programs. This report recommends that…

In June 1989, third, sixth, and ninth graders in Alberta (Canada) were administered standardized tests in English, Social Studies, and Science, respectively. This report presents results of these tests at each grade level and by gender, with comparative data from 1985. Data for 31,998 third graders (English), 29,918 sixth graders (social studies),…