Critical thinking is an essential component of managerial literacy, yet business school graduates struggle to apply critical-thinking skills at work to the level that employers desire. This article argues for a dispositional approach to teaching critical thinking, rooted in cultivating a critical-thinking culture. We suggest a two-pronged approach of (a) clearly defining critical thinking and selecting an accessible model for applying it and (b) integrating critical thinking consistently throughout the business curriculum. We illustrate implementation of this strategy in our revised MBA curriculum and conclude by challenging others to consider adopting a cultural and dispositional approach.