<p>So you got different sections in common app, each submitted separately. If I send the supplement section first, does the college receive it, or does Common App send the entire application at once? If my teachers send their letters first, does the college read them first or what? </p>
<p>The college is not going to read anything you send until they get your application. That means you have officially paid money to apply so are a bona fide applicant. </p>
<p>The rest of the items sit at the school waiting.</p>