Dilmah G
Dilmah, I agree with james9. Don't stress yourself too much. You're only 15, just try your best and it'll show. Being only 15, just focus on the next 2 years or so till you complete year 12, you'll be surprised by how quickly it'll go by and how well you do if you keep focussed. I wish I had the determination you have when I was 15. Keep it up! And remember, its not only a high UAI/TER/etc. that gets you in to ADFA, unlike other uni's, personality and traits are heavily factored in.