I am sorry if I am annoying you, but could you please tell the long story?
No it's ok you weren't annoying me, just thought I'd provide a quick yes/no answer rather than a long-winded explanation, since I assumed that's the only piece of info that's relevant in the end.
Also, when I said you don't need it, I meant it in the context of prerequisite knowledge. I.e. you'll get by in a systems engineering degree without having done physics in HS. Whether are not its an actual prerequisite to get into the degree, I have no idea since I'm not familiar of how HS/university works in VIC.
EDIT: I just realised that you weren't talking about a university degree in systems engineering, but the HS subject in VIC. I had no idea this was even a thing haha. My bad. Totally out of my depth on that one.