The present study examines possible early antecedents of entrepreneurship of 10th grade students. Hypothesizes that Entrepreneurial Orientation (interest and self-efficacy), together with Willingness to Expend Effort, would be an important predictor of an adolescent's Entrepreneurial Prospects. Furthermore, personality and the model of self-employed family were expected to predict the level of Entrepreneurial Orientation. (Contains 36 references and 5 tables.) (GCP)