How to get an atar of 80

[briz626]

hi guys, I'm in year 11 at the moment doing methods, chem, english, futher and year 12 history. My school isn't academically the best. I think it was a tech school before. How hard is it to get an atar of 80? If i can't I'd rather do an apprenticeship or something. My average scores are 70-75% english, 85% methods, 90% further and 75-80% chem. But I don't study or more I can't and i dont do a lot of work in class either because i hate school but i've got parents who want me to do well. Our further tests are like year 8 standard... I know 80 is extremely hard and I was thinking i was only going to get around 60 but how much work do you need to put in to get 80? btw, I think i've flunk my history. 41 first sac, 36 second, no idea third and 30 for fourth but probably going to do horrendous on my exam.

Thanks