The purpose of this study was to elucidate to what extent the goals of the leadership training program implemented in a medical college were achieved. Study subjects consisted of 74 first-year premedical students at the College of Medicine of The Catholic University of Korea. All participants completed two questionnaires: an 18-item self-leadership questionnaire asking self-expectation, rehearsal, goal setting, self-rewards, self-judgment and constructive thinking, and a 28-item self-efficacy questionnaire asking preference toward difficult work, efficacy of self-control, and confidence before and after the leadership training program. Students also competed a program satisfaction survey after the program. The collected data were analyzed with a paired t-test, descriptive statistics by IBM SPSS ver. 20.0 (IBM Co., Armonk, NY, USA). Students' overall satisfaction with the program scored 4.06 out of 5. The scores of self-leadership and self-efficacy increased after the leadership training program except for 'confidence' in self-efficacy. The results indicate that an intensive leadership program in a short period of time could help to enhance social competencies such as communication skills, empathy, self-reflection, and teamwork of premedical students.