I am an American international school student , next year I'm going to take AP exams 2009 (Physics, Math, and English), and I also want to try out the GCE A level, 2009. I am confused by the AS and A2 exams, if I want to get the A level qualification, do I need to take both exams? Also, there are two examination bodies provided by CIE and Edexcel, are the format of the exam the same? And which exam body is easily accepted when the result is used to apply for a university? Please forgive if I'm asking stupid question, I really have no knowladge about the GCE exam, feel free to educate me if you wish. Thank you very much.