http://www.uac.edu.au/undergraduate/faq/atar-scaling.shtmlIf your HSC mark was 83, then that's the final mark and it's what you got (already scaled up).
I have been told by several people today was our scaled marks and it kind of seems legit judging from my maths marks but I don't know for sure.
Don't worry if you use the ATAR calculators, the scaling would have been done in line with the previous years' results and it would be relatively similar.Scaling is done by UAC. I got an ATAR estimate and its was decent but that's because originally I thought scaling has already been done with the marks we got today...then I realized it is yet to be done and I've completely lost hope My marks are alright but they are not 'intense' subjects like extension maths and the sciences and will probably scale down :'( I seriously feel like crying.