Why would you take AP economics when you can take the CLEP and test out of it for both College and High School and it will not change your GPA. I believe all you need is a 50% to pass. Everyone down here in the south is taking college for high school and clepping out of everything. Their college is basically free. You can get the information at www. collegeboard.edu look under clep.
That is of course if you are from the USA.