Variability in diagnostic procedures and a lack of valid and reliable measures led to the development of a comprehensive battery, which incorporated an operational definition of learning disabilities. The battery consisted of forms for observing these functions: intelligence, academic achievement, gross and fine motor control, visual perception,…

This policy brief reports on a study exploring state by state variation in placement rates for students with disabilities in either regular or special education settings and the relationship of economic, sociodemographic, and educational factors to these rates. The study analyzed data for the school year 1992-93 and compared the percent of…