Generate text that refutes this claim: No harm to non-drug users  Random drug tests will pose no harm to students who do not use illegal drugs, as they have nothing to fear from this fact being certified. If anything it serves as a vindication of their law-abidance and good character.  Random drug tests will only catch those who are actively taking drugs, as tests can be used which are unlikely to make a 'positive' reading from secondary exposure (for example, being near someone else smoking cannabis).  Those actively taking drugs need help in getting off drugs far more urgently than they need their right to 'privacy', as addiction at a young age could have a significant negative impact upon the remainder of their time in education. Therefore, non-drug users have nothing to fear from testing. As a result random checks are in the best interests of drug users.
education general secondary crime policing house supports random drug testing
Students who do not use illegal drugs do have something to fear - the violation of privacy and loss of dignity caused by random drug tests. They may well feel that they are being treated as under suspicion with no evidence or cause, and resent this imposition upon their privacy. Indeed, the indignity of drugs testing may compel children who are already in a position of vulnerability as a result of social marginalisation or personal or family problems to drop out of school entirely.