Thank goodness I have never lost a student to suicide. But I have lost a student to court related issues. I am not sure if her ended up in jail. But his attendance did become sketchy. He only talked to me about missing one or maybe two classes. But I did not see him much after that. So, I personally withdrew him from the class so he would not get an F.
There was a second student now that I think about it who did go to jail. On the very first day of class he came up to me and said, "I am not sure how long I will be able to stay because I will be going to jail." Then he simply took a seat. He only came back for a couple more class sessions. And quite honestly I was a bit relieved because I was not sure what he had done, but I certainly did not want to be put in any awkward situations. So both issues pretty much resolved themselves.