Project Towards No Tobacco Use (Project TNT) is a classroom-based curriculum that aims to prevent and reduce tobacco use, primarily among 6th- to 8th-grade students. The intervention was developed for a universal audience and has served students with a wide variety of risk factors. Designed to counteract multiple causes of tobacco use simultaneously, Project TNT is based on the theory that youth will be better able to resist tobacco use if they are aware of misleading information that facilitates tobacco use (e.g., pro-tobacco advertising, inflated estimates of the prevalence of tobacco use), have skills that counteract the social pressures to obtain approval by using tobacco, and appreciate the physical consequences of tobacco use.