Since 1983 the Health Education Authority Schools Education Unit has been providing a survey service to schools throughout the United Kingdom. The service enables a school to survey the health behavior of boys and girls at different ages. The purpose is to make the planning of programs in Health and Social Education in the schools more realistic. Health behaviors in the areas of substance use, dental care, diet, homework, jobs, leisure, medication, money, physical activity, road use, self-esteem, sharing problems, social activities, smoking, sleeping times, and television habits were examined. The 1987 sample included 18,014 students between the ages of 11 and 16 from 116 schools in England, Scotland, Wales, and Northern Ireland. The 1987 version contained a trial section of"illegal drugs" questions. This monograph presents data from the responses to three newly incorporated drug questions about friends' usage of illegal drugs, reports of being offered illegal drugs, and personal use of the drugs. Six tables present data describing percentages of students who know someone who uses illegal drugs; percentages of student reporting they had been offered drugs; personal use of drugs; incidence of being offered or using cannabis leaf; percentage of 15- and 16-year-olds who had been offered drugs; and exposure to cannabis leaf for 14- and 15-year-olds. (ABL)