stick with advanced. get tutoring if you feel you're studying really hard and doing badly. but honestly, as hard as advanced might initially be for you, it'll scale better than standard, unless you really bomb out, which i dont think you will. as bittersweet em said, a band six in it is virtually impossible anyway. you'll have a better chance in advanced. and i wouldnt worry about your year 11 marks too much yet, year 12 is a lot better - more understandable, easier concepts (i thought), and if you have good teachers you'll be fine. i dont want to seem harsh by saying this but i honestly think noone does themselves any favours by choosing standard, unless they are honestly, awfully shit at english - and most people actually are not, with a good amount of study.