Twin success
This would be a super easy one to pull off, because you are usually in a very large auditorium or hall, and generally, you are not in close proximity with the school administration. And if the school is large enough, like a university for example, there are not really going to be too many people who would know you in the first place. If they did know you, they will probably not know you well enough to be able to tell you apart to begin with. In the end, it is still a pretty cool caper to pull off and something that you can tell your friends about for years to come.