What are some US Mandarin curriculum standards?
I am not familiar with AP Chinese curriculum but I would recommend go by China's HSK.

Reasons:


HSK is designed for non-native speakers and is administered by an agency of Ministry of Education.
If you adapted the HSK, you might lower your cost of authorisation. Even though I don't have the actual number, you could tell from the exam fees.
HSK is harder than AP Chinese. It's not easy to get 'A' in HSK.