Ranking in SAC's

[ed_saifa]

These sac rankings are ambiguous

[iamdan08]

Oh ok, i'm Pretty sure I understand it now! Thanks everyone! 

[?HI?]

So basically:

Exam mark is absolute. If you get 80/100 for the exam, your exam mark stays like that.

SAC rankings within your school is absolute. If you're ranked 3rd, then even after moderation, you'll still have a SAC mark that is 3rd highest within your school.

SAC mark after moderation depends on your school's performance in the exam. If the majority of people score high in the exam (particularly the guy ranked 1st), then your SAC scores will very likely be moderated up. Remember that the moderation process is a way of making each school's SAC marks relative to each other, obviously because not all schools have SACs of the same difficulty.

Final study score depends on the combination of your GA (graded assessments).

Hope this all makes sense.

[ed_saifa]

What if the person ranked highest in the sac scores really badly but the person ranked lowest in the sac scores high?

[?HI?]

I don't know exactly, but my guess would be that the moderation would not be as favourable as it could have been. That is why getting the internal ranking right is important.

[Eriny]

The VCAA takes people out of the moderation process within the cohort if they do way worse than expected on the exam, so you're safe to some degree of anomalies.

[ed_saifa]

that's a relief!

[chid]

Do all subjects have separate Unit 3 SAC's and Unit 4 SAC's, each out of 100?
I am unsure about this because for subjects with a mid-year exam there are three Graded Assessments (GA1, GA2 and GA3) and only one of these corresponds to SAC's. Will the Unit 3 Exam moderate only Unit 3 SAC rankings?

Also, with regard to actual ranking, does the spread of scores affect the person who secures the top ranking. Does it matter (for this person) whether he/she is a long way ahead of everyone or narrowly in front?

...I'm a little confused.

Thanks.

[Mao]

For subjects with mid-year, the ranking is taken from the entire year's SACs, and your SAC score will be the corresponding ranking average exam score for unit 3+4

The ranking only ranks you. It's based on the principle that similar ability students will perform similarly in exams. If you are narrowly in front, then your exam score wouldnt be hugely ahead of the cohort, (which consequently become a ranking exam score used for SACs etc)
but if you are hugely in front, the usual result is your exam score will be hugely in front, and in effect, you become a statistical anomaly and doesnt affect the cohort much (such as methods at my school last year, i got 45, next person got 24)
how far ahead in ranking should accurately reflect how well you do in exam, so just make sure you get a good ranking in SACs, and do awesome on the exam

hope that made sense

[chid]

That does make sense.

I assume the same reasoning applies to Maths subjects which have an Exam 1 and Exam 2 (overall SAC ranking will be based on Unit 3 and Unit 4 SAC's). That's right isn't it?

How come subjects which only have an end of year exam include Unit 3 and Unit 4 SAC's as two separate graded assessments?
There seems to be no point in separating these two if they are moderated by the same exam.

Thanks again. 

[Mao]

they are both moderated by the same exam

however, as they are only assessed on pretty much one thing, it's unfair to be ranking people according to how they go on the last day

rather, the performance of sem 1 and sem 2 are both used, a person who slacked sem one and gunned sem 2 clearly didnt try as hard as someone who consistently worked well both sem 1 and sem 2, and the second person should get a higher score.

for science subjects, the mid-year exams do that
and for maths, they're hard enough on their own, and the competition is pretty huge that you perform well in that subject anyways