The purpose of the study was to examine whether participation in a youth development program positively impacted participants' adult outcomes. Length of time adolescents spent in a comprehensive youth development program was correlated to their adult outcomes and functioning was assessed. All 141 adult past participants of a youth development program were identified. A survey was administered to 97% of the past participants located. School completion, higher education, alcohol and drug use, pregnancy and childbearing, employment, and involvement with the juvenile and adult justice systems were assessed. Degree of involvement in the program (low, medium, and high) was calculated and correlated with outcomes. Of the six areas surveyed, statistically significant findings (p<0.05) were obtained in three: education, employment, and criminal justice. Nonsignificant, but positive, trends were observed in the areas of pregnancy/parenthood and illicit drug use. Best outcomes were achieved with those who participated for at least 201 days.