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HSC scaling (1 Viewer)

Illumin@ti

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heyy does anyone have that comparison chart for 'hsc scores and atar' contribution on them? Can you guys post the ones for math adv, eng adv and standard, chem, bio, and legal please?
 

Babbabooey

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hey, um, how do u interpret this? I don't get it-
The hsc mark is what nesa sends you on the morning of the day ATARS are released. These are am average of your moderated external and moderated internal mark. They will be under the column HSC Mark. The atar contribution is what UAC uses for ur top 10 units, usually 5 best subjects. It adds all the "atar contributions" up and u get a score out of 500. Then all these total scores are ranked for all students in the state and you get a rank, which is your ATAR.
In the image below for biology, the students moderated exam mark was 60 and moderated assessment mark was 62, hence hsc mark was 61. When compared to second image the 61 would be equivalent to 50.2. Hence it has impacted them negatively. However the only marks they ever see are the marks in the first image. and if you pay i think $60 per paper you get your raw exam mark which is then adjusted via an algorithm, different each year to become your EXAMINATION MARK, but ye. We can also see that the break even point for biology is 79 see second image. Thus you would need a 79+ to be positively impacted for biology, different for each subject. You never see your the atar contribution for the subjects, until UAC releases the data for that year, which will be slightly different to the table in image 2, but not too drastically and you calculate it yourself, but unnecessary to do so, as you would have gotten your atar by then.
1719397080022.png

1719397194856.png
 

Armon

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The hsc mark is what nesa sends you on the morning of the day ATARS are released. These are am average of your moderated external and moderated internal mark. They will be under the column HSC Mark. The atar contribution is what UAC uses for ur top 10 units, usually 5 best subjects. It adds all the "atar contributions" up and u get a score out of 500. Then all these total scores are ranked for all students in the state and you get a rank, which is your ATAR.
In the image below for biology, the students moderated exam mark was 60 and moderated assessment mark was 62, hence hsc mark was 61. When compared to second image the 61 would be equivalent to 50.2. Hence it has impacted them negatively. However the only marks they ever see are the marks in the first image. and if you pay i think $60 per paper you get your raw exam mark which is then adjusted via an algorithm, different each year to become your EXAMINATION MARK, but ye. We can also see that the break even point for biology is 79 see second image. Thus you would need a 79+ to be positively impacted for biology, different for each subject. You never see your the atar contribution for the subjects, until UAC releases the data for that year, which will be slightly different to the table in image 2, but not too drastically and you calculate it yourself, but unnecessary to do so, as you would have gotten your atar by then.
Pretty close to how this works but not entirely accurate.
Worth noting btw that moderated assessment mark = the Assessment Mark/Grade you see for free on your transcript and aligned external mark = Examination mark.
For one, your external marks do not receive a moderation, they receive an alignment. Important distinction as your external marks dont differ based on cohort. Additionally, whilst we talk about things like "ATAR contributions" they aren't a real thing. They're only a model to gauge and compare the scaling of different subjects -> Those graphs that were posted are accurate, but there not the system UAC uses, its just a random guy on the NSW teachers facebook group. In fact, UAC doesn't even receive the Assessment Mark/Grade or Examination Mark that you get on your email from NESA. The UAC system only receives the raw external mark and ranks+relative distribution of internals and then does the same moderation process on their system to get a final scaled mark and best 10 units are summed into an aggregate mark which they order and assign atars to. This is done for more precision, as for example a 90 External Mark in 4u could correspond to a 61 raw or a 64 raw last year. We want to be able to be precise on who was better; this is actually one of the biggest faults with ATAR contribution modelling, because it gives the false perception that a 93 and an 100 in 4u are the same because there both 99.95 contributions, but in the aggregate system a mark can be "higher than a 99.95" because scaled marks dont cap out
 

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