Programs that provide information about drug use (including the drugs most commonly used and their effects, the symptoms of related disorders, screening and diagnostic procedures and methods of treatment) and/or offer any of a variety of services that focus on drug use prevention for people of all ages who are at risk (i.e., who are currently in the light or experimental stage of using drugs; who are members of a drug using sibling, peer or family group; and/or who have behavioral and/or emotional problems at home, in school, in the community or with the criminal justice system). Included may be printed materials or videos that address the subject; psycho-educational and skill building activities; structured groups which focus on family dynamics, problem-solving, self-esteem and similar issues; and presentations in schools and agencies and to family groups regarding the dangers of drug use, the signs of related disorders, the legal consequences of drug use and how to get help.