Students should not be tested because they could simply elude the test, the schools job is to teach. Lets say someone does get drug test and get expelled then what? What was the point of that? The student will just have more time to get high, and thats not solving any problems. The students still has a drug problem and simply has been stripped of their source of education, if this is the goal then go ahed do your tests, but if not then i think it should be stopped drug test are a waste of time, money, and are absolutely unnecessary