The study investigated (1) the prediction of attrition/persistence for disadvantaged and regular freshmen at the University of Nebraska at Omaha, and (2) the effectiveness, in terms of attrition/persistence, of an experimental program for disadvantaged students. Descriptive, variance, and correlational (single and multiple) analyses and chi square analyses related several factors (e.g., race; sex; financial aid; employment; general achievement/aptitude, ACT Composite scores; cumulative grade point average, GPA) with attrition/persistence. Separate regression equations for various groups and subgroups resulted in greater precision. Singly or multiply, GPA was the primary, significant predictor of attrition/persistence, making other predictors appear unnecessary. For the population and for nonexperimental freshmen, attrition/persistence was significantly delineated by GPA, ACT scores, and financial aid. For experimental and/or control freshmen, attrition/persistence was significantly delineated by GPA only. In terms of attrition/persistence, there were significant differences between experimental subjects and nonexperimental subjects or nonexperimental financial aid nonrecipients, but no significant differences between experimental subjects and control subjects or nonexperimental financial aid recipients. (Author/RC)