If the school operates the review, it should be free. If the school contracts with a third party to do the course, it should be charged to the student/family. That is assuming that the AP exam is not required for the final course grade.
If the school operates the review, it should be free. If the school contracts with a third party to do the course, it should be charged to the student/family. That is assuming that the AP exam is not required for the final course grade.