Not Elizabeth but I don't think that would be a problem at all. In fact, the majority of advanced students at both my kids' high schools take either 2 sciences OR 2 English/literature courses OR 2 history courses (depending on their interests) their senior year, if not their junior year as well. My ds will be taking AP Physics C and AP Environmental Science this coming year, both with labs. He has a friend who will be taking AP Euro and AP Govt this year.
What she said. No problem at all with taking two difference sciences or maths or whatever in a year. The struggle is doing two levels of the SAME thing in a year and trying to communicate what you actually covered, how much time was spent, etc. Those two things were done consecutively, which raises a lot of questions in the evaluator's mind. But to do subjects concurrently, no problem or oddity there.
You know, the more I think about this, the more odd it seems to me. I'm not familiar enough with the Apologia Adv. Chem book. Does it go all the way back to the beginning and start OVER with topics, like Zumdahl or any typical text used for AP chem? Or does it pick up with the 2nd half of topics they would have covered in a full AP class? Don't know if I'm making sense here. If the Apol. adv. chem book, by itself, covers the same material as any other AP/2nd year text (Zumdahl, whatever), then absolutely I would fight and finagle to get that counted that way on the transcript. Add the labs, get the time up, get the credit. But IF the book actually sort of takes a part 1, part 2 approach, covering the 2nd half of a through scope & sequence, then I would more logically call completing the two books together a single, honors chem class.
In other words, this whole discussion has rested on the assumption of what the Apologia Adv. Chem book covers. I'm now realizing I don't know the answer to that.
Now that's really nitpicky, because they're we're going to have some brave soul pop up and say they gave their kid credit for Adv. Chem, by itself, because it's a book. Well there you go, do anything you want. That is of course the prerogative of schools, to define their courses as they wish, and there are NO TRANSCRIPT POLICE. I could see both situations as being legitimate, depending on the time frame, the student, and what you were trying to communicate. And I'll repeat my original point and the only reason I started posting in this thread. You can DO anything you want, but the transcript clerk may spill red ink over it and change how it is counted. So IF you cut it close and IF they don't calculate it the way you did, you could end up with a problem, deficiencies, etc. So don't do this. Add more time, finagle the dates, call it honors, take more classes at the cc. Just don't cut it close and get yourself in a pinch.