Discusses problems of sample selection in explaining student performance in economics classes. Reports on a study of student performance correlated with class attendance, course dropouts, and homework. Concludes that any researcher gathering data about instructional effectiveness must account for students who drop the class. (CFR)

This study focuses on school system characteristics that affect the dropout rate in the Chicago public high schools. Although the primary variable for investigation is attendance rate, other school system variables examined include type of school, percentage of low-income students in a school, and the overall level of student ability for a school…

This evaluation report of an attendance project in Portland, Oregon, public schools describes goals, methods, and results for 1985-86. The introduction states objectives of identifying, contacting, and counseling students leaving school or attending irregularly, with the purpose of guiding them into school or alternative educational programs. A…