what the fuck are you on about?No, your preliminary course finishes in a few more days, but you don't become year 12 until next year. Some schools might choose to call you year 12 next term, but they are only pandering to your desires - it is not official.
from http://www.boardofstudies.nsw.edu.au/manuals/studying-hsc.htmlStudy for your HSC year will begin in Term 4 for most students, meaning you officially start Year 12 around October. You will be required to read the Rules and Procedures for the Higher School Certificate before starting your HSC year. Your school will give you a copy, and it is also on the Board’s website.
So yeah stop thinking you know everything lol. I understand it says "most" but you're just naïve for thinking its not official.