So idk what exactly my teacher is going to say about if I can do or not do 4u but he's being very vague and its sort of hinting to me that I can't do 4u despite being ranked relatively higher than most students in ext. What should I say in the case he does say no? Like this is sort of unfair as there are students in ext averaging less than 70 that might have the chance to do it via the accelerated pathway but like... not fair on me at all...
i would personally get my parents involved. definitely don't do this you feel like it can make the situation more heated/turn into a fight and make your teacher turn against you. but on the off chance that your teacher and parents are reasonable and respectful i feel like it allows for less of a chance of the teacher BSing you and intimidating you. also they are more inclined to present a clearer argument to your parents as opposed to you. ive been in a situation where i've had to speak to a teacher regarding an issue and i was dealt with very differently to my parents bc we spoke to the teachers alone on seperate instances. this is up to you tho
also yes compile your past 3u performance and explain how strong 3u performance indicates a higher rate of success in 4u, even more do than 2u. like if someone barely passed 3u but aced 2u the reasonable recommendation would be that they stick to just 3u or even drop to 2u, but if you did badly in 2u and much better in 3u thats indicative of maybe not dedicating enough effort to 2u or whatever other issue you might have dealt with.
the most important thing to do tho, is to give them a clear reason for why your 2u performance is what it is (for example maybe you were doing more units or extracurriculars than you could handle in y11, and you put more effort into 3u than 2u bc you didn't have enough time to do both) and how you are going to fix it for next year to make sure that doesn't happen in the hc (continuing with the same example you could say you are going to drop extra units or whatever to reduce your workload).
also id also ask if there is anything you can do personally to prove you can cope with 4u. in the past in my school they allowed a few lower-performing students to do 4u on a provisional basis, meaning for a bit they weren't actually enrolled in the course but they attended lessons to see how they would go, and then they would join them in afterwards. my school was told to stop doing it bc of enrolment issues with nesa but im sure you can do it in a more reasonable way. like similar to the way how you can drop or switch courses if they are on the same line in the first week or so, see if you could ask if you could attend a few lessons for the first few weeks to see if you could keep up to the class or whatever. and they can kick you if they think you're too far beyond the rest of the cohort.