<human>: Can you give me the gist of the text in a nutshell?

My girlfriend was in math with my best friend, and she recently told me that he hadn't shown in three weeks, and he had just missed the midterm. I tried to call him several times, but he never responded. One of my other good friends called me today to inform me that he dropped out of college. Apparently, he was kicked out of band (I have no idea why), and he is a music major, so that certainly wasn't a good thing. He was also complaining a lot about his roommate (another good friend of mine), but I don't see a reason why he would. We believe that he dropped out mainly because of drugs. He's been smoking pot for about a year (I have to admit, this is partly my fault. And I greatly regret it), and in the past couple of months he has been doing more dangerous drugs like DXM, K2, and airduster. He even skipped all of his classes to make a drug run one day, and ended up not returning until two days later. I ripped him up and down for that, but I didn't realize that he had such a huge problem. He apparently showed up at the apartment of some of my friends in my hometown to stay with them. This is bad because these two are even more into drugs than he is. What's worse is that they are pissed off at how irresponsible he is, and coming from my two least responsible friends, that's pretty bad. We're thinking about telling his grandparents, because they are his legal guardians, and he didn't bother to tell them. I would just like to know if there's a way we can convince him to return to college, stop doing drugs, etc. before we have to resort to this. I'm going home tomorrow. Please please please; if any of you have dealt with anything like this in the past, please help.
<bot>: My friend dropped out of college for stupid reasons, and he does a lot of drugs. How can I convince him to return before I resort to telling his grandparents?