Casey John Hadmer, Scots College; no, he does not appear on the Top Achievers' List.
I am not repeating either 15250 or 15260, my disappointing results notwithstanding.
I don't know if I would do any better, to be honest.
Ohh, repeating Extension 1 ...? I
did study hard for 15260, but not for 15250; Extension 2 does help your Extension 1 mark, however. I don't know if I repeated it I would achieve a higher mark. There isn't much margin of error and UAC only takes your last result.
Still, I can't see you getting a much lower mark than what you did after repeating the course.