Well, my cousin got 5% for his 3u half yearly, mainly because he gives up easily and thinks all the stuff we do in it is useless. He fell asleep in the actual exam too, cause the reading time was enough to tell him he was stuffed, so he didn't even try to attempt it properly. He dropped down to 2u of course.
As for me, I got 40% for my school's half yearly, so a 58% looks really good from where I'm standing. All in all, I've been getting lower and lower marks since my Year 11 half yearly for 3u maths, as well as all the class assessments, and I've been working so hard all year to improve, and I didn't. I've just had enough of it now, so I dropped down to 2u. One of the Learning Support teachers has been telling me all year to do so, but I was stubborn and said that I could do it. So I finally gave in and dropped. I do 3 subjects with major works, so I guess she was right when she told me 3u maths is just gonna bring me down.