<p>thomasc’s answer is untrue. You should only report AP scores of which you are proud, just like you would not include an award for “Worst Personality”. The purpose of an application is to show why you believe you are a fit for a college, so why show them anything that would hurt you? (except for disciplinary action, of course)</p>
<p>Colleges know this. Also, they will not see your AP scores on your collegeboard report that is sent to them during admissions, (This only includes SAT and SAT Subject Test scores) but only when you send your AP scores to your chosen college in order to try to claim credit.</p>