Business education often renders students less likely to act ethically. An infusion of liberal learning in the form of behavioral ethics could improve this situation by prompting students to develop higher levels of professionalism that encompass ethics, social responsibility, self-critical reflection, and personal accountability. More specifically, teaching behavioral ethics, which draws upon psychology, sociology, and related fields, can improve students' ethical decision making in a manner that can lead to a more ethical climate in organizations and in society more generally. This article introduces key concepts of behavioral ethics, argues that teaching behavioral ethics can have a positive impact, discusses materials that can be used to teach those concepts, and addresses action-research approaches to assessing the effectiveness of the instruction. There is significant evidence, though preliminary and incomplete, that teaching behavioral ethics is a promising new approach for improving the ethicality of students' decisions and actions.