<p>Is it necessary? Does it look better for colleges if you upload one?</p>
<p>No, it is not “necessary” if you do not have worthwhile info to report. Actually, some colleges strongly disapprove of attached resumes/brag sheets/etc. Check the ones you’re applying to just to see if they say anything about them.</p>
<p>If there are things you want/need to add that absolutely cannot fit elsewhere (i.e. necessary elaborations on ECs), and you think they will improve your application, then attach something brief. Don’t repeat info!</p>