Various curricula and educational materials for responsible management education (RME) have been developed by business schools from different parts of the world for sustainable development. There is, however, limited research on the effectiveness of these courses. By conducting surveys before and after the semester among business students from two RME courses, this study investigated the impacts on students' awareness of and attitudes toward ethical and sustainable issues in business practices. Findings show that students have enriched their understanding of the issues, have a positive attitude toward RME, but need a stronger driver of behavioral change.