1. Introduction. Schools are valuable social institutions that play an essential role in the safe and healthy development of young people, including prevention. Summary. The nature and extent of the damage. Drug trafficking is considered the largest revenue generator globally among the variety of transnational criminal markets, and to combat illicit trafficking, a comprehensive strategy involving international collaboration, law enforcement and prevention is needed. This includes addressing this massive underground criminal market further destabilizes unrest-ridden regions, provides revenue to entrenched organized criminal groups, weakens, Abstract. This article presents qualitative findings associated with the experiences of those tasked with enforcing laws in a new cannabis environment. The criminal justice system has a vital role to play in eliminating illegal drug use and trafficking. Sri Lanka has a national policy and criminal laws aimed at imposing harsh punishments on drugs. Abstract. This article examines the illegal drug market, law enforcement countermeasures and their interaction in Great Britain. The conventional view that the drug market is monopolistic, dominated by a few large suppliers, is challenged. It is a heterogeneous set of companies, which are better distinguished by their qualitative characteristics rather than by their size. The findings identified on the main illegal drugs in relation to violence were cocaine, phencyclidine, lysergic acid diethylamide, methamphetamine, ecstasy, heroin, marijuana, etc. The most frequent crimes. 1. Introduction. Schools represent valuable social institutions that play an essential role in the healthy and safe development of young people, including the prevention of the use of substances such as tobacco, alcohol and marijuana, on the other hand, the exposure and use of substances such as smoking , alcohol and illicit drugs. , continues to threaten,