There is a rumor among college students. It is how to get a 4.0 GPA, which seems to be getting harder and harder every year.
So far, any instance of this actually happening hasn't been found, but one never really knows. It does depend on the school and the teacher.
The legend goes that, should your roommate commit suicide or is murdered in your room, you will automatically get a 4.0 GPA out of sympathy. Of course, you can't have helped them in any way or killed them.
Of course, all colleges say there is no real foundation to the rumor. In other words, don't try to put your eggs in this basket. There is a large hole and your eggs are certain to fall and break.