just go to the boardofstudies website and log into students online,
from there u should be able to check it (Assessment rank order)
- www.boardofstudies.nsw.edu.au
GD luck!!!!
trust me, i hated science from 7-10, but loved biology. Its great, interesting and fun (well for me),
what u can do is pin point the reasons y ur not doing good at it (like less study or ur finding it interesting)
look at the books- ie the year 11 and 12 bio textbooks and see if u like it...