This publication provides information on best practice in drug prevention at European, national, regional and municipal level. It is a translation of a German study commissioned by the Federal Centre for Health Education, Cologne. While, in some sections, reference is made particularly to Germany, the publication’s conclusions are international, providing added value for a pan-European or global readership. It is hoped that the publication will help accelerate the development in Member States of quality standards for prevention projects and training requirements for prevention workers.