Is it okay to not do anything for 1&2 subjects and focus on 3&4 instead? I heard that people even skip some of their 1&2 classes..
I'm going to let you know what I did.
I did two year 12 subjects in 2013: Biology and Further Mathematics. I had to do Biology 3/4 outside my school (at Kangan TAFE instead) because there was an insufficient number of students in year 11 wanting to do Biol 3/4, for my school to run this accelerated Biology class. Every Monday after school, from 5:30-9:30, I would attend a Biology class 20 mins from home. In addition to this, I had Further Maths, which was at school. In addition to these two year 12 subjects, I did English, Chem, Methods and Physics.
A ratio of year 11 to year 12 I had was this for subjects:
English to 3/4s:
1:9
Methods to 3/4s:
4:6
Chem to 3/4s
6:4
Physics to 3/4s:
0:10
As you can see, I didn't put in 100% to year 11. I had to sort out my priorities. In saying that, even though I wasn't putting in a lot of effort into my 3/4s, I was still getting really high marks in class, about 90%+ in SACs, etc. What I'm trying to say, is that you need to look at what you are capable of doing. For me, personally, I found that I could invest less time in 1/2s and still get those good results, whilst prioritising and investing 85% of my energy and effort into my year 12 subjects.
I regret doing nothing for Physics though. Nevertheless, I am taking Physics one step at a time, and I think all I need to work on is the motion section, because I actually studied in unit 1 when we looked at Electronics, so fingers crossed I can get through 3/4 Physics.