Based on work place drug testing policies, Random Student Drug Testing to be drug tested at school. Drug tests are usually in the form of a urinalysis, which detects marijuana, cocaine, amphetamines, PCP and opioids. Today, schools and administers implement these policies with the intended purpose of identifying students who may have a substance use problem and referring them to treatment. However, in many cases more punitive measures such as dismissal from extracurricular activities or expulsion have occurred.