Definitely agree with you on these two points - I think a lot more students have the ability to do two unit if they were willing to put in the effort. But keep in mind, a lot of students dont really need to do that well, either because they dont want to go to uni or because they dont really need a high ATAR. So they sometimes dont bother with 2 unit because ultimately, they dont want to put in the effort when they dont have to do so.I know this is going to sound a bit dickheaded but in all honesty i think most of the students opting for genral instead of 2u are in fact capable of doing decently in 2u if they apply themselves. This raises the question, why aren't they applying themselves? There are several possibilities such as:
1. Perhaps a reduced work ethic and laziness, taking the "easy route" of general mathematics. This might be augmented by a genuine lack of understanding of how scaling etc. works (due to a lack of explanation by teachers for example), leading them to believe a marginally better mark in general is going to lead to a higher ATAR.
That being said, I think the quality of teaching in maths isnt that great from what I have seen through tutoring. See, Maths is organised, clear and logical, so basically everything that a teenager isnt. When you teach maths to teenagers, you to have do so in an organised and logical manner. A lot of teachers are too lazy to explain things out properly, they just rush through an explanation and dump worksheets or textbook exercises on the kids. Even worse, some schools dont even teach the topics in a proper order, they will start with a topic which contains assumed knowledge from another topic with the kids dont even know yet.2. It could also be an issue with how the course is run at a particular school, are more accessible topics introduced first to ease a student into the course? Does starting with a more difficult topic serve to discourage the student from continuing with a course that at first glance seems too hard?
You add all that up and basically you end up with a lot of students who have no idea what on earth is going on when they enter year 11. I was lucky because I had a drill seargent for a teacher in Years 9 and 10 who actually took the time to explain things out properly. Many students dont have that which is why they have such low confidence and skill levels in maths. I usually tutor students who are struggling in maths and one of the most common issues is that they havent been taught properly.