The student’s address.

W: I want to register for this mathematics course.
M: I’m sorry registration has closed.
W: Closed? The clerk told me I could come back and register any time during the first week of classes.
M: Well, that’s not possible. The computer’s official student account has already been sent to the state. And that’s what our budget is based on. Who told you that anyway?
W: Some woman here when I tried to register three weeks ago. She said I just had to pay a late fee.
M: She must have been a temporary worker. They don’t have much training. Why didn’t you register then?
W: She said I couldn’t until I had my birth certificate.  Here it is.
M: Your birth certificate?
W: Well, I’m a new part-time student. So she asked for identification. I don’t drive so I don’t have a driver’s license.
M: Huh. That’s no reason to demand a birth certificate. We only need to establish residency: a phone bill with your name and address on it would’ve been fine.
W: Really? Only prove of my address?
M: Yes. I’m afraid she gave you the wrong information. Still you’ll have to wait and take your math’s class next semester.
W: But that’s unfair.
M: Well, I sympathize with your problem, but frankly, I don’t think there is anything anyone can do for you. You were trapped in the system. If you want to, you can talk to the director. She will help you if she can.
W: Great.
M: Don’t get your hopes up.