This study developed a theoretical model of the school-to-work transition and evaluated the effects of a transition support program designed to prepare compulsory school graduates to enter the Swiss dual vocational education and training system. A 13-session program was designed to improve teenagers' views toward the world of work and enable them to sharpen their interpersonal skills. The intervention's effects were assessed through interviews with participants at the program's completion and 1 year later and with participants' teachers. Findings showed that participants improved their readiness to face the world of work. Implications for future research and programs are discussed. (Contains 1 figure and 1 table.)