As a result of a recent College Board Admissions Testing Program Achievement Test scaling study, L. L. Cook and others recommended that the practice of sampling only high school juniors taking the achievement tests in June might be expanded to include sophomores and that a two-stage scaling procedure be evaluated. The two-stage procedure would…

Scaling is carried out in an effort to increase the comparability of scores obtained on different tests. This study explored the relationships between College Board Achievement Test scores and potential scaling covariates for various subgroups of the test-taking population with the goal of providing several alternatives to traditionally used…

This paper provides the basis for understanding score equating through item response theory (IRT). Theoretical justifications and practical advantages of IRT true-score test procedures are discussed. Three steps in the equating process are specified, and a self-test is included. (SLD)

This paper examines how various equating methods are affected by: (1) sampling error; (2) sample characteristics; and (3) characteristics of anchor test items. It reviews empirical studies that investigated the invariance of equating transformations, and it discusses empirical and simulation studies that focus on how the properties of anchor tests…