This is one of the most bizarre questions I have seen yet, and the correlation is weird. But yes, I supposed those who participate in academic cheating and are drug users should give lectures to their schools about the importance of non use of drugs. It's one good way, I suppose.
Of course, when some one is under academic cheating, who is trying to give up smoking needs to express himself how and what type of procedures he's been through in order to give up on smoking. Why? Because that can be another symbol of some one to quit a negative thing in his life; for other people.
Every person has a secret, and no one should be required to sit in front of a crowd your age and tell them you were really wrong and regretful. This just make that person feel bad about themselves even more so than when they were on the drug they were on.
No, drug users who participate in academic cheating should not be required to give lectures to their schools about the importance of not using drugs, because giving the person an audience would be acknowledging and recognizing the drug use. They would not be sincere in their lecture. It would not help anyone involved.
Cheating drug users are probably not the type of people to show up on time for or delivery very well done lectures to a school about drug use. They would probably be showing up stoned, obviously be hypocritical, and would be so disingenuous that viewers would be turned off of the message they were delivering.