Don't worry about school ranking. (you still probably will, I did)
Try your best and you'll be rewarded, nobody will drag you down.
In fact despite going to a school ranked 170 which is pretty poor in BoS eyes
I believe I was dragged up.
bos ranks school in terms of there external hsc marks, the purpose of this is to clarify rankings that the school has given bos......example a 500th rank school there number 1 student is probably ranked to the 10th best student in a 300th ranked school. l obviously do not know the full details but i presume it goes something like that .
This isn't always true.
And BTW, don't aim for Insearch. Insearch is not something to aim for, it is a backup. You're better off going to ACU or UWS than Insearch if you receive 67 ATAR.
Judging by your subjects anyway you are not a 67 ATAR student