In 2010/2011 the Provincial Government of the Western Cape (PGWC) in partnership with the United Nations Office on Drugs and Crime (UNODC) Southern Africa tasked the Alcohol and Drug Abuse Research Unit at the South African Medical Research Council with conducting a survey in order to determine the regional prevalence of drug and alcohol use, risk behaviours and mental health problems among school learners in grades 8-10. More specifically, the objectives of the study were: 1. To estimate the prevalence of alcohol, tobacco and other drug (ATOD) use among grade 8-10 learners in the Western Cape; 2. To estimate the prevalence of mental health problems and aggressive behaviour among grade 8-10 learners in the Western Cape; 3. To estimate the prevalence of sexual risk behaviour among grade 8-10 learners in the Western Cape; 4. To estimate the prevalence of delinquent-type behaviour and exposure to crime among grade 8-10 learners in the Western Cape; 5. To identify the extent of service utilisation and the need for ATOD use and other services among grade 8-10 learners in the Western Cape. The findings are provided in this report.