Okay, there's a massive misconception I've seen from people, n its no one's fault i just think the board have to let students know about this:
HSC RESULTS:
Your HSC Exam marks are not just a raw exam mark that has been changed a little. ie. If you got a HSC Exam mark of let's say 75, you didn't get 70-80 as your marks.
Everything in life gets to be the wonderful bell curve - lower marks have very few people, numbers increase to massive proportions for the middle marks, and then they decline right up until the top mark. Now, let's say you got a RAW EXAM MARK (exactly what you got on the exam) of 65.
And let's say the average (where most people were) was 60. You were above the average which at those marks mean the exam was pretty damn hard. Now, the Board like to have the highest point in the bell curve at around 70-75 (ever wondered why most people get band 4?). So your marks are ALIGNED. Now, this process is way too complicated, but essentially if the average was changed from 60 to 75 by the Board so most people get Band 4, then you might get aligned above the average up to 80!
Wow, sounds alot better doesn't it? That's why with all these people at Band 6's (90 or above) it doesn't necessarily mean they got over 90 as a mark (usually, but very possible). Hence, if you got a RAW EXAM MARK of 80 in that same exam where the average was only 60, you might get a band 6! Yep, only 80, and a band 6! The ALIGNED EXAM MARK that will show up on your results might say 91!
This is all thanks to the bell curve - they want the highest point at band 4. Basically, if u got around 75, you got around the average mark for that exam. If the exam was a PERFECT EXAM you'd have gotten 50 (in reality). Which is the absolute middle. Less than 75 is usually below the average, above is obviously higher.
UAI RESULTS:
Now, this is all leading onto one major thing: SCALING FOR THE UAI! First note: you know the original exam mark i was talking about? The 80 that gets a band 6? THAT 80 IS THE MARK THAT WILL BE USED! NOT YOUR HSC EXAM MARK! (nor your HSC mark that is average of exam and assessment). UAC uses that original mark, and your ranking from your school assessment.
Don't think of scaling as 'harder or easier subject scaling', it's not exactly like that. Scaling is this:
For a subject, if a candidate got mark 'XX', what would they have gotten if every person who sat the HSC for that year had sat that subject?
Example 1:
John gets a RAW MARK of 85 in General Mathematics. What would he have gotten if everyone - all those that sat General Maths, all those who didn't do maths, all those who did Mathematics, all those who did Extension 1, and all those who did Extension 2 - sat the exact same paper?
Well, most people in Extension and Mathematics should get higher shouldn't they? They should mostly get Band 6's or high Band 5's?
That pushes John's mark down more and more until everyone is filled into the equation. Suddenly he has a new scaled mark of 70!! Because if everyone had sat that paper, that's what he would have gotten according to the bell curve! Think of it as the average, with all those smart bunnies from extension, might have been as much as 15 marks higher! Thus, our dear John's mark goes down! =(
Now, I noticed one person said that the higher the mark, the less badly it is scaled NO MATTER WHAT THE SUBJECT.
THIS IS COMPLETELY TRUE!
Let's say John got 98 in General Maths. And how would he have gone if EVERYONE had sat the same paper? In other words, how many of Mathematics/Extension I/Extension II would have beaten him?
The answer is NOT MANY! A 98 is a VERY VERY high raw mark! Even the best of the best might have only gotten 95 or so! Hence, his raw 98 might be scaled to a 95/96! Or even not at all!
This shows that the better you go, even if every person in the state sat the same paper, you will still be higher than most! And thus, you WILL NOT BE SCALED DOWN MUCH AT ALL!
Hence, when I know people complain about General Maths and lots of other subjects, ask yourself this: if EVERYONE IN THE STATE had sat that same paper, how would you have gone comparatively? Would you get the same mark? YES! But how many people would be higher than you? Alot more than before! Which means how much your raw mark is worth is less! Hence, UAC won't give you alot of credit for it over someone who got a really high mark in any other subject.
Alright, Example 2, I'll use one of my own results here lol:
Let's say I get a 94 in Legal Studies this year. It DOES NOT mean I got a mark in the exam of 94/100. It means that whatever the average was, I was about (very sketchy guess here) 20 marks or more above it. How do I know this? Well, if the average the Board wants is 75, and they do that, it means my mark went up (or down) from whatever it was originally (97? 90?) to 94! Which is about 20 marks, but I'd imagine it'd be more. It means my mark was right up the top end of the bell curve, and still there were about 2% higher again.
Let's guess and say my ORIGINAL/RAW EXAM MARK was 90. The average was 70. UAC uses my raw 90 - NOT MY 94! THEY DON'T CARE! Now, they go, "if everyone in the state sat legal this year, how would he have gone?"
Everyone who didn't sit legal, but sat maths/geography/economics/physics/senior science/drama etc etc is put into the equation. Yep, every single one! How many would I have still beaten (percentage-wise). Would it still be about 98% of the cohort?
Now, if I would then the scaling stays the same - I get about my 90! (which is halved for two units of 45). Now, if they think Legal this year was really really hard, that even if everyone sat it I would go great, then it's scaled higher! And the opposite can also happen!
Soooo, I hope that explains it a little more, I'm just tryin' to help people understand how scaling happens and what marks are used. A lot of people get angry when they add up their best 10 units of the HSC MARKS (which as I've shown, are alot higher) and get an aggregate score (best 10 added up) of 400 and only get a UAI of 75. (an aggregate of 400 is actually about 95 UAI lol).
If you have any questions please ask, I know I've been trying forever to find out how the system works.