<p>^^^</p>
<p>Also, there can be multiple students with the same name, etc.</p>
<p>But yeah, Wes has a pre-app (free, I think), when I applied, and as I understand it its purpose was, as PaperChaser Pop says, the main point is that they can create a file for you, which makes sense to me. Thus, the school code (so they know where letters of rec and transcripts from your school go).</p>