Lambjam, I did not say I wouldn't go to the school because of naplan results, if I based my decision on naplan alone, I'd be trying to get in there. The school my children will go to is nearly all pink and red on the myschool site, that doesn't bother me, because I know that the "like" schools that they compare data with, are really not that alike. I looked on the website to see the number of students, as I couldn't find it on the school's website.
I do say do not judge a school before you know it, but I said I wouldn't send my kids there primarily because I have no interest in my children attending a bilingual school. I don't mind my children learning another language, but not learning to speak, read and write French intensively from kindergarten. No thanks.
I do understand what you mean about not being able to choose any public school, and I totally agree. I think parents should be able to choose any public school within a 10km radius to give parents more choice, but the bottom line is that you and I are both fortunate enough to choose an alternative, and that is why I say it's unfair to our most disadvantaged.
You can always apply out of area.
Just on your point about wealthy public schools reaping the benefits of government funding, well, this is why the Gonski Report recommends funding a price per student, plus recurring funding for schools where resources do not meet minimum standards, and also funding schools according to SES.
ETA - The Gonski Report addresses a lot of your questions, and is an interesting read. It is long, but recommendations and findings are food for thought.