The simple truth is that there are drugs on campus, but not that many. Rather than saying there is a drug scene at CUA, it is more accurate to say that there are drug addicts and dealers who bring the drugs. Individuals, not the collective whole or even a reasonable majority, abuse or take drugs at Catholic. Maybe it is the Catholic identity or abundance of entertainment available or overabundance of alcohol, but the average CUA student is just not interested in taking drugs.
This is not to say that drugs will fade away or die eventually because there will always be a few students every year who take/deal drugs, and everyone will always know who to contact should they ever get curious. But even then, the most prevalent drug is marijuana. So parents and non-drug users rejoice: The Catholic University of America has been tested for drugs and passed with flying colors.