from college board

If I take an AP course, do I have to take the corresponding AP Exam?

While we recommend taking the AP Exam after taking an AP course, it is not required.

老美說話不會說must，娃中學的顧問都在說現在大學不看SAT/那些標考，學校‘recommend’ 能考的去考。

意思就是要考，但是要準備好了再考。