The Longitudinal Student Success Study was a six-year study to identify factors associated with to student success at a large Eastern community college. The study focused on American Black students as one group of students likely to have different background characteristics and preparedness levels than what generally facilitates success at a postsecondary educational institution. Information was collected on 522 American Black students and 893 American White students who were first-time students in Fall, 1990. Student success levels were constructed from information on students' graduating, transcript information, and/or earning 12, 24, or 36 credit hours while maintaining a passing grade point average. An iterative chi-square segmental modeling technique was used to identify factors most likely to predict student success and non-success. Application of logistic regression allowed a prediction of non-success for a statistically significant portion of students within that category. Identified predictor variables included race, sex, age, full-time/part-time status, financial aid information, student work data, math assessment, and English assessment information. (Contains 32 references.) (JLS)