The authors investigated the effects of an intervention developed to enhance student motivation in the first years of secondary education. The intervention, based on future time perspective (FTP) theory, has been found to be effective in prevocational secondary education (T. T. D. Peetsma & I. Van der Veen, 2008, 2009). The authors extend the previous studies by focusing on all levels of secondary education and investigating the effects of the intervention over a longer period. In addition, they investigated the feasibility of teachers performing the intervention. A total of 766 students completed questionnaires 5 times during the first 2 years in secondary education, measuring FTP, goal orientation, and self-regulated learning. The authors randomly selected 65 students for the interventions. The results showed positive effects of the intervention on self-regulated learning and performance-approach in all levels of secondary education. Interventions performed by trained teachers were equally effective as those performed by the researchers.