Athletes Training and Learning To Avoid Steroids (ATLAS) is a school-based drug prevention program. ATLAS was designed for male high school athletes to deter drug use and promote healthy nutrition and exercise as alternatives to drugs. The curriculum consists of 10 45-minute interactive classroom sessions and 3 exercise training sessions facilitated by peer educators, coaches, and strength trainers. Program content includes (1) discussion of sports nutrition; (2) exercise alternatives to anabolic steroids and sports supplements; and (3) the effects of substance abuse in sports, drug refusal role-playing, and the creation of health promotion messages.