I took AP classes back in the dark ages starting in 10th grade, only because they weren't offered in the required courses in 9th. I don't think there was a huge difference in what was required in our classes vs the honors classes.
With that said, what is the goal in having her take it? To challenge her? To lighten her load in college? To raise her GPA? (Back in the day, AP courses had a weighted GPA, so those who had all As in regular classes couldn't have as high of a GPA as those who had all A's in AP courses.) I'd talk to the high school counselor and ask how the pass rate is for Freshmen. This is also a good chance to see if there is any weighting for AP classes vs others, or whatever else your global "wants" are.
-Kris
DS (9/05)
DD (8/08)
DD (9/12)