Beginning with a reference to living in a time of both uncertainty and opportunity, this article presents a discussion of key areas where shared understanding is needed if we are to successfully realize the design and use of high quality, valid assessments of science. The key areas discussed are: (1) assessment purpose and use, (2) the nature of…

This report examines the differences in impact estimates and standard errors that arise when these are derived using state achievement tests only (as pre-tests and post-tests), study-administered tests only, or some combination of state- and study-administered tests. State tests may yield different evaluation results relative to a test that is…

Education has become one of America's biggest industries. As a result, the public wants some evidence concerning the quality of the educational program. This booklet was written to delineate the role of assessment as an important aspect of a comprehensive accountability system for the nation's elementary and secondary schools. It describes what…

Proponents of out-of-level testing generally contend that there are three benefits for students with disabilities: (1) undue test frustration is avoided; (2) test measurement accuracy is improved; and (3) test items are better matched to students' current educational goals and instructional level (Thurlow, Elliott, & Ysseldyke, 1999). It is…