Help please!! (1 Viewer)

[username1928]

I really want to achieve an ATAR of at least 90
So far these are my rankings:

Advanced English: 24/78
mathematics 2U: 15/46
mathematics 3U: 12/16
chemistry: rank 6/25
french continuers: rank 7/8
Studies of religion 1U: rank 12/30

Also, my school is ranked in the 60's
Also, if will trials make a significant difference to my end result?