The Schools Health Education Unit supports and promotes effective health education in primary and secondary schools. The services it provides promote cooperation between teachers, parents, children, governors, and health-care professionals. A school deciding to use the Health Related Behaviour Questionnaire, developed by the Schools Health Education Unit, selects a sample of pupils from the chosen year groups to answer the many questions covering different areas of their daily life at school, at home, and with their friends. The Unit codes the returned anonymous questionnaires and prepares them for computer analysis, and the school receives a set of computer-generated tables showing the percentages of pupils (divided into sex and year groups) who give different answers to the questions. Some of the topic areas included in the latest version of the questionnaire are: (1) AIDS; (2) Alcohol consumption; (3) Diet; (4) Homework; (5) Leisure pursuits; (6) Relationships; and (7) Smoking. The purpose of the survey is to provide reliable data for individual schools and District Health Authorities over a wide range of health issues, against which they can decide priorities, allocate resources objectively, and monitor change. This report includes the results of the 1993 survey and provides predictions for the 1995 edition. The number of schools completing the Health Related Behaviour Questionnaire was 171, the number of pupils was 29,074. Examples of findings are: (1) 34.7% of 15- to 16-year-old boys had tried at least one drug and 47.7% had been offered them; (2) 28.0% of 15- to 16-year-old girls had tried at least one drug and 43.0% had been offered them; (3) an increasing percentage of older respondents that had used one or more drugs in 1993, rising to a third of 15- to 16-year-old boys and more than a quarter of girls in the same age group. (BF)