we spent like 5 minutes before the exam writing our numbers, fuck doing it in the exam, thats a wasted 5 minutes!
You arnt supposed to hand the exam in unless your number is on EVERYTHING, the supervisors are supposed to check and make sure, and you arnt supposed to sign that slip until thats all done.
Who gives a fuck if you waste time after the exam doing it? If you cant write it after the exam, dont sign that slip until its all been filled out correctly (Its your hsc)
The markers mark everything, the reason your number is on every page is incase one falls loose and disappears, so they know where it came from and who's it is