Interesting that this question never comes up when a high school student finishes calculus BC in 11th grade or earlier and wants to take more math at a local college. In that case, it is always assumed that the student is capable of taking multivariable calculus next, without even knowing how the student did in the calculus BC course or AP exam, or what the college’s math placement recommendations with respect to AP scores are.
Why is there a common recommendation to repeat AP credit for a college frosh, but not for a high school student taking more advanced math at a college?
Also, the common recommendation is to repeat AP credit seems to waste whatever effort was made by the parent and student to get on track to take calculus in high school.