I need a free way to test out of a class

I am a high school student, and last year I skipped Spanish 3 and went straight to AP Spanish 4. I had a 97 in the class and got a 4 on the AP exam (out of 5) but now my principle is saying that I either need to take Spanish 3 in school or pay 300$ for a summer course. Is there anything that I can suggest to her as a way to “test out” of the course that is not expensive or free? I really don’t want to pay 300$ for some BS course that I don’t need for a class I already know.