This report on the effects of court-ordered desegregation in the Dallas (Texas) Independent School District is divided into three major sections. The first updates national desegregation literature. The second section outlines briefly the history of desegregation in Dallas schools over the past ten years, and discusses the court's intervention in the 1976 plan in relation to school enrollment patterns, student assignment and ethnic distribution. The effects of desegregation on student achievement are examined in the third section. Median percentile rankings and gains for white, black and Hispanic students are reported by grade, subject and sub-district. (JCD)