<p>Can anyone explain to me how it works?</p>
<p>You can retake any class that you got a C (or D...not exactly sure) or lower in during your freshman year, and replace your GPA calculated-grade with your new grade. Both will still appear on your transcript, but only your new grade will be calculated into your GPA.</p>
<p>First-time freshmen may repeat at USC a maximum of three courses taken during the first two semesters of enrollment at USC in which grades of D+ or below (including UW and IX) were received, and only the subsequent grade, even if lower, will be calculated in the grade point average. Both courses and the grades received will appear on the transcript. The same course may be repeated no more than once for the benefit of substitution of grade. </p>