Simulated data were used to demonstrate that groups formed by imposing cut-points based on either discrepancy or low-achievement definitions of learning disabilities (LD) are unstable over time. Similar problems were demonstrated in longitudinal data from the Connecticut Longitudinal Study, where 39% of the children designated as having LD in…

This article presents the background, the history, and the implications of the Larry P. v Riles decisions in 1972 and in 1979 in which a federal district court enjoined California from using any standardized intelligence tests to assess Black children for eligibility for classes of educable mentally retarded. (Author/CTM)

The analysis in this article is directed to the basic issues: Are IQ tests biased against Black children? And are IQ tests valid for the placement of Black children in special programs? The research evidence on these major issues is ambiguous and contradictory. (Author/CTM)

The Larry P. decision is criticized with reference to: (1) predictive tests and the standard curriculum; (2) the court's portrayal of special classes; (3) the effects of the 1972 decision on special class enrollment; (4) semantic confusion; and (5) the impact on Black children who experience academic difficulty. (Author/CTM)

A technology for domain or criterion referenced testing was developed to evaluate the Minnesota Mathematics and Science Teaching Project (MINNEMAST) in grades K-6. The venture was influenced by the low achievement of MINNEMAST students on standardized tests. After instructional objectives were selected and operationally defined, corresponding test…