Gifted Issues Discussion homepage Forums Learning Environments AP, CLEP, SAT subject tests?

Can anyone help explain all this to me in real terms. I don't see my DD doing any AP exams because of her writing problems so those are probably out. We are then looking at CLEP and SAT subject tests. I understand the tests but how do you decide whether to take the SAT subject test or just CLEP a subject? When do you start looking at this with a GT kid? We are doing junior high and high school classes now.