Several researchers have highlighted the need to strengthen school-based career education in Hungary. After reviewing the international literature on similar programs, this study reports on the impact of an innovative, multi-method career education course. It aimed to support Hungarian high school (ISCED 344) students in grades 10-11 in making decisions on further education and career choices, and in dealing with related uncertainties and difficulties, mainly through developing career management competence. Using a quasi-experimental design, the intervention group of 92 students showed significantly better results on half of the 20 career orientation variables assessed six months after the end of the intervention of 12 three-quarter-hour sessions, with low effect sizes compared to the pre-intervention assessment, and the 96-student control group. In addition to a self-developed questionnaire, the CDDQ Career Decision-Making Difficulties Questionnaire; and the CFI Career Factors Inventory were used. The effectiveness of the intervention was independent of factors such as gender, age, academic performance, and parental education. The study concludes with the suggestion that an enhanced version of the course could be an officially recommended supplementary career education program in Hungarian high schools.