<p>Have you called UCSC?
As long as it’s you calling (not your CC transfer counselor) they will let you know the
reason for the rejection. </p>
<p>It may be that there was an error on their part, which may impact your other UC schools.
It could be that you input your AP credits incorrectly on the application, and they don’t recognize them.
Another thing that can happen is that some of the humanities pre-req’s for the CSU system (specifically some of the English), do not qualify as UC req’s.</p>