<p>It is true, you can only apply once in a year. If you are deferred, you will be reevaluated during the RD round. But if you were flat-out rejected ED, well, too bad.</p>
<p>If you applied Early Decision and were not offered admission (denied) then you can not re-apply for Regular Decision. You must wait one year before you can apply again.</p>
<p>"Early Decision denied applicants will not be re-evaluated for admission during the Regular Decision evaluation process. You may submit an appeal in writing to the director of undergraduate admissions. You may include supplemental supporting documents (additional letters of recommendation, transcripts including the most recent marking periods, etc.) in your appeal."</p>