If it wasn't for me getting a band 6 in Mathematics Standard 2, no one would have gotten a band 6 in my cohort (top 3 place were all bunched together, and we all get 98 internally despite averaging 82 at most).
In Physics, 1st averaged 96.7 % but got 69 in the trials (the internal assessments were depth studies, presentations and one exam that was only worth half the marks of the 3rd assessment task, with the 4th assessment task being from Independent Trial Exams). I got 1st in the trials but 2nd internally overall. This resulted in a HSC internal mark of 80 despite averaging 82 raw.
NESA should doing something about the structure of assessment tasks. As after all, they should be designed to assess the actual student's abilities, not be given free marks just for writing good presentations or depth studies.