This study examines the default behavior of 5,177 undergraduate student borrowers who attended Texas A&M University--Kingsville (TAMUK) and entered repayment of their TG-guaranteed Federal Family Education Loan Program (FFELP) loans between October 1, 1998 and September 30, 2002 (fiscal years 1999-2002). Using the Department of Education's official cohort default rate formula, 569 borrowers, or 11 percent, were in default. The study uses a statistical technique called multiple logistic regression to analyze the effects of individual student and family characteristics on the probability of default, while controlling for the effects of the other variables in the analysis. For students at TAMUK, persisting in college to graduation, performing well while at the university, and receiving exit counseling are all extremely important in decreasing a student's likelihood of default. These results suggest that expanding campus-wide efforts to increase retention rates and improve academic performance may be the most effective default aversion strategy for TAMUK. The study finds that a student's background characteristics, such as race, gender and family income also have significant relationships to a student's probability of default, even after accounting for the college success variables. Although these relationships are not as strong as the relationships between success in college and default, they still persist. This finding highlights the fact that many students attending TAMUK are first-generation college students and have little or no financial and family support. These students may require additional assistance in order to successfully transition to college life and remain in school when faced with many conflicting priorities. Appended are (1) Sample Definition and Variable Descriptions, and (2) Standard Errors and Confidence Intervals. (Contains 2 tables, 11 footnotes, and a bibliography.)