To evaluate the effectiveness of Expanded Food and Nutrition Education Program (EFNEP) by comparing participants’ overall diet quality using Healthy Eating Index Score (HEI) when entering and exiting the program. Target audience were limited income families of various races/ethnicities: Caucasian, Black or African American, Asian, Multiple Races, Hispanic/Latinos. This study used the socioecological model as its theoretical foundation. Evidence suggests that an individual’s level of nutrition knowledge has important influence on their HEI Score. HEI provides an overall picture of the types and quantity of foods people eat, their compliance with specific dietary recommendations, and the variety in their diets. Other factors explaining variations in HEI's across individuals are income and education levels, race, ethnicity, and age. In this study, pre- and post-test data collected from participants of various race/ethnicities were compared. Secondary analyses were performed on data collected from 2013-2016. Dietary recalls were collected by paraprofessionals. Outcome measures were the differences between HEI-2005 scores at entry and exit. Significance between each group was determined using the Wilcoxon signed-rank test and differences among all groups by Kruskal Wallis test. Out of the total participants (n=4457) reported, 32% were Caucasian, 27% Black, 1% Asian, 2% multiple races, and 38% of Latino ethnicity. The mean change in HEI-2005 score from entry to exit was 8.2 points in Caucasian, 8.1 in Black, 3.8 in Asian, 9.2 in multiple races, and 9.6 in Latino participants (p<0.01). Overall, the average change in HEI scores increased by 7.8 points indicating that nutrition knowledge likely improved and led to short-term improvement in diet quality.