From my experience kids choose subjects at school to get them where they want to go not necessarily because that is the subject they intend on studying furhter once they are there e.g. two kids want to do law - one hates Maths and Science so does 4U English, 2U Modern, 2U Ancient, 2U Legal and aims for an ATAR of 98 while another also wants to do law but strongest subject is Maths so 2U English, 4U Maths, 2U Legal and 2U Japanese also aiming for ATAR 98. Both may very well get their aimed for ATAR and end up at the same uni doing the same course but have played to their strengths to get there.