An extensive questionnaire survey of post-primary school pupils between the ages of 15 and 19 years was conducted. A random and representative sample was selected from 23 schools from the County. Secondary (inclusive of convents and Christian Brothers Schools), vocational and community schools took part. More than six hundred questionnaires were completed. This paper presents a brief summary of the main findings. More in-depth analysis was undertaken, but time constraints prevent their disclosure at this stage. The investigation revealed objective evidence of extensive use of alcohol and cigarettes by teenagers in County Tipperary.