My schools a private/catholic school and we're not that great
These are the 2009 results ("a good year")... I'm not suprised 2010 results haven't been published, average study score dropped to 28 :S
Dux: 98.15
7.2% earned an ENTER of 90 or higher.
22.5% earned an ENTER of 80 or higher.
15% gained Study Scores above 40. (Average Study Score was 30)
92.19% received an offer of a tertiary placement.
We do have a big cohort though... ~300 YR 12s doing vce.
I'm pretty sure it'd be pretty hard to get a ATAR less than 30. It's probably 'I don't give a crap about vce' people getting less than 30 I think (Why even bother?!) and we do a few of them; some drop out, a majority do VCAL, and some were dusted off during 'spring cleaning'. And besides wouldn't your SAC marks send alarm bells ringing for the teachers? Our teachers would be like 'improve your marks or gtfo.'
Um but yeah, I haven't ever heard of anyone getting lower than 30 before, lowest I've heard is 50. But then again, would you tell people if you got less than 30 :S