This informal study sought to determine the effectiveness of paraprofessionals in extension work dealing with the development and expansion of youth programs in disadvantaged areas of St. Louis. Program objectives were: (1) to reach more youth in educational programs sensitive to the life style of urban youth; (2) to develop new ways of recruiting and developing leaders; and (3) to provide opportunities for creative adaptations of program ideas and changes. This report considers the following: (1) the place of this study in action research, and some precautions concerning demonstration-study projects, (2) some questions that need to be considered in the early phase of a youth program membership expansion effort, and (3) educational, social, and, economic differences, and the criteria for evaluation of the program's effectiveness. The results of the study justify greater involvement by paraprofessionals in extension youth work in urban areas. (CL)