A school-based program, Project Towards No Drugs, is based on the theory that high school students are less likely to use and/or abuse drugs if they know about the myths of drugs, have the skills to lower their risk of taking drugs (e.g., coping and self-control), understand the consequences of taking drugs and know about cessation strategies. This 12-session program is implemented by a trained teacher over a three-week period. In an experimental study of 21 alternative high schools (1,074 students from diverse ethnic backgrounds), in which youth were at an increased risk for drug use, schools were randomly assigned to a 12-session program implemented by a trained teacher, a 12-session program implemented in a self-taught format, or a standard care control (Sussman, Dent, Stacy & Craig, 1998). At the one-year follow-up, the researchers found that the program groups used alcohol and hard drugs significantly less than the control group. There were no differences between the two program groups. A recent evaluation found that the program can be successfully implemented at all high schools (Dent, Sussman & Stacy, 2001). Classrooms within three schools with a total population of 1,208, were randomly assigned to the program group or to a standard care control group. At the one-year follow-up, the researchers found that the program group used alcohol and illicit drugs significantly less than the control group. However, no effects were found for two other targets of the program, marijuana and cigarette use.