The State of Texas, USA, has laws which prohibit consumption, purchase or possession of alcoholic beverages prior to age 21. In addition, a zero-tolerance (any detectable amount of alcohol) law for drivers under age 21 was enacted in 1997. Young people convicted of these offences must complete an approved alcohol education program in addition to other legal sanctions. This paper presents an analysis of young people who attended this program and an evaluation of cognitive, affective and behaviour change by this group. Demographic data, alcohol/drug abuse screening scores and knowledge tests were analysed.