Well, VCAA does attempt to address these inequities by boosting people's selection ranks with SEAS. However, of course, I don't know enough about SEAS to be able to give anything insightful as to whether it provides a huge impact to those in difficult circumstances - I have heard of people's selection ranks being boosted by almost 10 ATAR points though.
Also, apart from the discussion centred around the ability to afford tutoring and educational resources, here's some more food for thought - the fact that there's a deeply embedded cycle within low SES communities. If you think about it, if a student's parents were unemployed, or maybe struggling financially, I doubt that the focus of the student would be on studying i.e. in these circumstances the value of education is lower since there are most pressing issues to attend to. In most of these families, the students are pushed to enter the workforce early instead of pursuing tertiary education (hence, a high ATAR doesn't really mean anything to them), and start providing and this endless cycle will simply keep occurring. I know that not everyone will agree with this mentality - in particularly, those with immigrant parents (not excluding others though), but that's simply because there's a different value and perspective on education. (e.g. in some schools, studying hard might make you the 'nerd' of the year level, but in others, studying hard is looked favourably upon and you're more like a 'god')
Sorry if my comments came out as a bit mean, I do understand that some people just have to prioritise the basics first and everything after. I am understand that sometimes exams costing a bit of money can be well out of reach for many parents, I am so sorry to those students in those situations and it is certainly not there fault. I always promised myself one day if I finish VCE and get a good study score, I will create resources for those who can't afford it. I understand not everyone is as fortunate as me/you/us and that is why atar notes exist we all help each other. My public school is an average one, but the neighbouring public schools are really bad. My school is around 200-ish and some schools around me are around 400-500+ YET some people there still score a study score of 50. It is possible to do well at any school, tbh you don't need money to do well if you are really committed and look around for free resources. One day when you guys finish school and do well will you promise to help out those who aren't fortunate? I want to write practice exams for the disadvantage kids.
I mean, yes, I do agree to a certain extent that if you're committed, the sky's the limit. But, as I've said above, it still depends heavily on those around you and the value placed on education. In lower SES communities, there's a lower chance that students are going to have the level of commitment needed to score highly (I'm not calling them lazy, but that there are external factors which need to be considered). Also, there would be a point where no matter how hard you might want to pursue education, you can't.