It sounds as if your requirement for ID was probably, in some ways, a higher barrier than what is required in order to vote in an election, possibly. And you're telling me that you never once, other than these two who went back to get it—which is not saying they didn't have it—had a situation where there wasn't a student....
This is actually one of the arguments or examples that's often used of someone who would be disenfranchised by not requiring.... How many students do you think would, roughly, in an estimate—