Drug testing high school athletes is not an effective way to reduce and deter students from drug use.
A 2013 study looked at 14 years of data on student drug use and found that school drug testing was associated with "moderately lower marijuana use," but increased use of other, more dangerous illicit drugs.
Another study reported by the National Institutes of Health concluded that drug testing was not associated with changes in substance use.
. Moreover, another study found that random drug and alcohol testing had "no deterrent effects on student athletes for past-month use during any of four follow-up periods". 
Evidence shows that students and high school athletes are not largely deterred from drug testing programs implemented by their schools. These students who are determined to use drugs will either continue to do so, unafraid of the consequences, or will seek out far more dangerous substances with potentially more harmful and even lethal effects.