<p>A&L, for strictly controlled Schools/majors, most upper division classes req a D-clearance (a special permit to register issued by one’s department advisor) in order for the computer registration system to lock out non-majors. This means there is a spot for everyone who needs a class for their major and lets in, by permission, others if there is space available. For SCA, my sons were issued D-clearance for most of their courses. GEs are not so barred, but TO classes are, etc. It’s just a way to manage UG registration.</p>
<p>I’m not sure of the number of spots that open up in SCA for transfers, but those who care to transfer internally (already USC students) must take specified course(s), and complete an application and supplement that is equivalent to those submitted by incoming freshmen. Critical Studies is one major which may have a number of openings at junior year. However the smaller, more competitive entry majors like IMD or Production, may not have many. USC students compete with outside transfer applicants and the few I know of either minored in SCA, got exceptional grades, and made contacts with profs or similar. It is possible, but considered a very difficult path and, while a few make it, it is not commonplace.</p>