Whenever classification decisions are made on educational tests, such as pass/fail, or basic, proficient, or advanced, the consistency and accuracy of those decisions should be estimated and reported. Methods for estimating the reliability of classification decisions made on the basis of educational tests are well-established (e.g., Rudner, 2001;…

This report has a simple aim: to present results from international assessments so readers can judge for themselves how American students stack up globally. It's intended to be a stand-alone supplement to the "Education Olympics" web event held between August 8th and August 22nd, 2008 (see edolympics.net). It shows how the U.S. has…

Proposes a hierarchical item response theory (IRT) model for mastery classification in criterion-referenced measurement. In this model, items measuring the same criterion are grouped, and a difficulty and discrimination parameter for the criterion is estimated on the same scale as the person and item parameters. Illustrates the model with a test…

Describes the development of a domain-referenced system intended to both describe and classify current writing assignments and to create composition assignments. (HOD)