This summary report presents an evaluation of three phases of the HPA's public information campaign on drugs, which took place between 1997 and 1999. Phase one of the campaign was aimed at 10 to 17 year olds, phase two at 10 to 13 year olds and phase three at 14 to 17 year olds. This report presents findings from the benchmark study which was carried out prior to the start of the campaign and subsequent evaluations conducted following each phase of the campaign. The findings indicate the successes of the campaign but also some of the difficulties involved in planning, executing and evaluating drugs campaigns. This summary has been made available to a wider audience in the hope that others can learn from it.