I dropped Business Studies a week into it and swapped to Modern History. I could not stand it, I liked Commerce in year 9 and 10, but Business was shocking.
Aside from that the only other change I made to my subjects was dropping for Advanced Maths to General, why? Because I have a strong dislike of maths, and secondly, I am too lazy to bother with something that I could be good at if I stuck to it, but when I would rather be doing something else, it is a waste of my time. I did my last Maths exam (not that it was hard) yesterday, and will be handing in my maths text book first day of term 4 and never going back - yes, I am dropping General Maths.