Drug consumption has reached its highest rate among college-aged students, especially marijuana. According to a study from the University of Michigan, 51% of full-time students have used an illicit drug during their lifetime and about 40% have in just the last 12 months. 
The importance of conducting periodic background checks and drug screens post-employment cannot be overstated. Case in point: Dr. Carmen A. Puliafito. Harvard educated Dean of the prestigious Keck School of Medicine at the University of Southern California, a man with a prolific career that once seemed unstoppable, was caught with another side to him.