This report presents findings from a study of dropouts and students at risk in Chicago public schools. It is divided into five major chapters. Chapter 1 describes the study's grouping of Chicago high schools into four "types": selective academic; selective vocational; non-selective integrated; and non-selective segregated. A racial-ethnic breakdown of enrollment in each of the four types of schools is given for the freshman classes of 1978, 1979, and 1980. Chapter 2 presents dropout statistics for those classes, broken down by type of school and a variety of different characteristics, including race/ethnicity; gender; race/gender; age; performance on minimum competency tests; reading and mathematics achievement in Grade 6 and as entering freshmen; and grade level at time of dropping out. Chapter 3 provides results of a survey of all public high school principals which contained twenty questions ranging from asking principals to identify the major forces that contribute to student dropping out to seeking their advice about how to solve the dropout problem. Chapter 4 examines Chicago's dropout rate and economic future in comparison with other major cities. Finally, Chapter 5 presents an annotated bibliography of dropout-related research. An appendix presents responses from the high school principal survey. (KH)