Well done, you should post your MW on here.
I don't understand how that works. I thought that those who got 50/50 were short-listed. It seems such a more efficient, sensible system. Otherwise they'd need to go around and re-check everything to see if it's showcase worthy. Like, do they re-read...
It's got nothing to do with the public-private dichotomy, if that's what you're insinuating. Your marks do get scaled up if the rest of your cohort performs well, which may have some correlation to the higher performance of private schools.
I don't think you can use those comparisons...