The Career Development Laboratory is a program of vocational orientation for junior high school students which was conducted at Sayre Junior High School, Philadelphia. To determine the program's success three instruments were administered: a Career Plan Survey showing students' present career plans and their present knowledge about the career, a Career Information Survey indicating students' information about careers in the six major career areas covered by this program, and a Semantic Differential to determine the program's effect on students' attitudes toward certain careers. Findings indicated: (1) no increase in knowledge of careers in which students were interested, (2) a significant increase in knowledge about certain aspects of the six major career areas, and (3) no significant attitude changes. Recommendations were made to place greater emphasis on concrete activities in planning by the staff. Also recommended was a reevaluation of the time spent in various activities in terms of program priorities and further evaluation of the program when its offerings have stabilized. (Author)