Methodological problems in estimating dropout rates and the implications for studying dropouts from special education

Abstract

Variability in reported estimates of dropout rates are, in part, due to factors that operate independently of true differences that have been demonstrated for student characteristics as well as home and school features. We examine differences in definitions of dropouts, computational methods, and the complexities in defining cohorts. Finally, we explore the importance of sample attrition. We argue that reliable and valid dropout rate estimates are essential before it is possible to establish reasons/causes for dropping out or to design prevention programs.