<p>There is NO filtering for yield-protection in the ED round (why would they, given ED-yield = 100% and binding). Duke is likely to have a target or desired-range of ED-admits every year, but it is the same for all ED-applicants. Stop fretting excessively even if Duke is your high-reach school, as you will get the maximum benifit of doubt in the ED round. Since you have already applied, worst-case, if you were a border-line-admit, you will get deferred, and get another serious look in the RD round. It is easier said than done, but try to direct all/any nervous energy toward your RD back-up school applications…</p>
<p>While I won’t make the same assertion regarding Duke’s RD yield protection, IMHO, Duke is amongst the fairest in the elite-top-10/20 schools. Anecdotally speaking, at DD’s local in-state public magnet/IB school, Duke admits approx 10 kids/year regardless of past matriculation rates. While 2-3 ED-admit every year, RD-yeild rate is not so hot (only 25-50%). Flag-ship UNC-CH, HYPS+MC and other ivies are the beneficiary cross-admit schools. Similar patterns are in evidence at NCSSM and couple of other top-schools in the RDU area. Duke’s charter preference for Carolina(s) does not seem to be a big factor either, as we routinely see other-highly-qualified kids from same schools get rejected who would have matriculated in a heart-beat (read FA not being huge factor).</p>
<p>@RKS, this is a general comment - PM for a chance opinion (as if you really need one) !</p>