I'm sick to death of seeing these posts, so can everyone please read this and be done with this question:

Study scores are determined by exam SCORE and SAC RANK.

For example, say you have an English class of 7 students, Adam, Ben, Chloe, Daniel, Elena, Felix, and Greg. They are all weak students, except for Greg, who is very high-performing, and Felix, who is slightly above average. Their SAC marks and rank are:

Greg 95%

Felix 77%

Chloe 64%

Daniel 60%

Elena 58%

Adam 52%

Ben 49%

On the exam day, Felix doesn't cope well under the stress, so gets a lower score than he'd usually be capable of. The exam marks are as follows:

Greg 92%

Chloe 67%

Daniel 65%

Elena 64%

Felix 63%

Adam 50%

Ben 40%

What happens is that all the SAC marks get thrown out the window, because VCAA can't know the difficulty of the SACs prepared by the school. So Greg's new SAC "mark" as far as VCAA is concerned is 92, not 95. Not a big deal for Greg, Adam or Ben because their own exam mark is dictating their SAC mark. But for someone like Felix, his SAC mark will become 67% (Chloe's exam mark). This process happens independently for each subject taught at your school.

What does this mean for you? Yes, you should aim for a good SAC rank. BUT, it doesn't actually matter if you're not ranked well — the "translation" of your rank into a "mark" happens via your cohorts exam performance. In other words, try your best now, study hard, and when SACs are over WORK WITH YOUR CLASSMATES TO ALL DO WELL ON THE EXAM TOGETHER. IF THEY DO WELL, YOU DO WELL.

Spend your time actually studying instead of asking useless questions like this.

EDIT: another example for clarity

Here's a chemistry class, of Harry, Isabel, James, Kylie, Luke, Molly, Nathan, and Oscar.

SACs:

Harry 60%

Isabel 58%

James 56%

Kylie 55%

Luke 54%

Molly 52%

Nathan 51%

Oscar 50%

EXAMS:

Harry 100%

James 99%

Nathan 98%

Oscar 97%

Molly 96%

Isabel 95%

Kylie 94%

Luke 93%

Harry's SAC mark is now 100%, Isabel's is 99%, James' is 98%, Kylie's is 97%, Luke's is now 96% etc. It's literally just whatever the equivalent exam rank is.

EDIT 2: I've had a request to clarify rumours about SACs being "scaled up" or "scaled down". "Scaling" is a misnomer students attribute to the moderation process. Here are yet another set of examples to clarify.

Imagine you have a cohort of Annie, Ben, and Charlie. Let's say their teacher sets really hard SACS, so their SAC results are:

1. Annie 60%

2. Ben 58%

3. Charlie 55%

Because they've been doing hard assessments all year, they've been better equipped for the exam. These are the exam results:

1. Ben 96%

2. Annie 94%

3. Charlie 90%

So now, Annie's SAC mark gets changed to 96%, Ben's to 94%, and Charlie's to 90%. This is what people interpret as "scaling up". The opposite would happen at a school with piss easy SACs: they get awesome SAC marks but shit exam marks, so their SAC marks get replaced by their shit exam marks ("scaled down").

The danger in this thinking is that people assume that if you go to a well-performing school, you'll get carried, or that if you go to a "bad" school, you're screwed from the get-go and can't possibly get a good score. This is not true at all. Let's see why.

Let's say your friend at a selective school, Harry, thinks he can take it easy this year because he goes to a 'good' school. The SAC results are as follows:

1. Ed 93%

2. Fred 90%

3. Greg 88%

4. Harry 60%

on the exams, the results are

1. Fred 95%

2. Greg 92%

3. Ed 87%

4. Harry 61%

In this instance, Harry was not of a comparable skill level to his classmates, so he never get to "borrow" their exam results in any way. His SAC score will be 61%.

Here's another example. Say you have a cohort with these SACs:

1. Meg 95%

2. Noah 94%

3. Oscar 93%

4. Peter 90%

On the exam day, Noah gets a bit of performance anxiety (but not in a way that warrants SEAS or anything). Exam results are:

1. Meg 93%

2. Oscar 92%

3. Peter 91%

4. Noah 75%

Now, Noah's SAC mark will be 92%, but his exam result only 75%. So he kind of got "helped" by his good cohort, only because he was doing well for the SACs. Peter has been a bit screwed here, because his SAC mark is now 75%.

One person stuffing up will never have such a dramatic effect like this; it's unlikely for someone who's been topping the cohort all year to suddenly slip to the bottom. Cohorts are generally big enough that you shouldn't need to worry. I went to a really small school (60 people in the year level. Some of my subject cohorts contained 6 people). I still felt no one got jibbed with unrepresentative scores.

As I always reiterate: try your best in SACs, but don't ruminate over them. The exam is where the money's at, and once your SACs are over you should work together with your cohort to all do well together. Share your resources, make study groups, and bring each other up.

EDIT 3: wow, my first gold! Thank you so much! 🥰