Is there a test to testify that one works on a particular field.

<p>I’m an international and apparantly, AP are only destined to US students. However among the AP available there’re subjects which are particulary interesting but not provided in France.
Computer science isn’t provided in any courses and economy are restrained to Economic section which reduces drastically the hours in science (Maths,physics,Biology).</p>

<p>Let’s say that I wanna learn these courses (Don’t think that’s for the admission process because I don’t really care of impressing Admission board and even it was so I know that it would have no impact, it’s only for my own interest)
How could I prove (if I succeed in getting into an american university) that I already master these knowledge in order not to be stuck in classes studying things already learnt.</p>

<p>Sorry for mistakes and thanks in advance</p>