Great post by jamonwindeyer.
Use it a motivation to study harder. Although it might seem like you're going to do badly, if you work hard you
will improve. Your Unit 3 SACs are only worth 20%, and your SAC is worth 15 out of the 60 marks for Unit 3. This means that the particular SAC you did is only worth 5% of your mark (using information from the study design, so may not be 100% correct).
Couple of stories from me:
I know it's not quite the same, but in year 11 spesh I was struggling. I was getting mostly Cs and some Bs, which was a shock for me as I was used to getting A+ all the year before. I used it to work hard, and the end of year exam I got A/A+, and in year 12 I got B/A/A for my SACs, moderated to A overall, and I might have been second in the class (not sure, as we weren't told and I got 38 while only one person in my class got 40+, so I was probably 2/3 in the class)
For my end of year exam, the methods 3/4 second exam I found tough. I left a few blank spaces (which I didn't have to do for any other exam) and it stressed me out, because methods was pretty much my best subject, and I had 2 exams the next day, specialist exam 1 and literature, two of my hardest subjects. I spent an hour or two feeling stressed and not doing anything, then I decided I had to move past it and work on my other exams, as there was nothing I could do except do the best I could for the rest of my exam period. It was really stressful for me as I had 7 exams and methods was my first subject, and first 2 exams, and I had the next 4 consecutive working days with 5 exams. It ended up alright though, I got A+/A+/A (only got an A in exam 2) and equal first in my school

One score won't determine your entire ATAR, it plays a small role and use it to work as much as you can to reach your full potential. Use it as motivation. Don't stress over it, there's nothing you can do to change it, but you CAN use it to do better and make a comeback

My specialties were methods and chem (more so methods now, bit rusty on chem) but if you have ANY questions feel free to post them here, or pm me

Good luck and don't stress
