"Atkins v. Virginia" (2002) dramatically raised the stakes for mental retardation in capital punishment cases, but neither defined this condition nor imposed uniform standards for its assessment. The basic premise that mean IQ scores shift over time enjoys wide recognition, but its application--including the appropriateness of…

The purpose of this research was to develop and test a method of identifying groups of students participating in a mandated statewide norm-referenced testing program who have undergone highly specific training in preparation for, or coaching during, test administration. The implementation of the analysis procedure was intended not only to identify…

The requirement that home schooled students score at or above the 40th percentile on a nationally standardized test runs counter to several widely accepted principles of measurement. A single score should not be used alone in decision making, and there is no evidence that this is a valid use of the test. In addition, the 40th percentile is not an…