The author wrote this dissertation on the effects of mentoring intervention on student retention in community colleges in May 2002. The goal of the longitudinal study was to inspect the effects of a mentoring intervention program on retention and grade point averages of students at a two-year community college. The data used in the study came from a mentoring program called New Dimensions on the Ivy Tech State College-Central Indiana Region Campus. The study looked at the effects of mentoring and variables such as gender, ethnicity, marital status, and age group on student retention and grade point average. Moman used the College Student Inventory's Dropout Proneness Score to analyze the data in the study. The author concludes that the interaction effect of gender member and mentoring treatment were significant on grade point averages. Age group also had a significant effect on retention and grade point averages. The researcher took these significant effects and then controlled with an Analysis of Covariance for the Dropout Proneness Score. Moman concludes by making recommendations for future studies and additional research that could clarify the effects of mentoring programs. Contains 4 appendices and 56 references. (MZ)