<p>Clearly they don't waitlist everybody as they do have a new class each year. In fact, they overenrolled last year. </p>
<p>The question is not why they don't accept people; the question is why they don't reject people.</p>
<p>Wash U makes it very easy to students to apply as they take the common application with no extra essays - unusual for a school of its high ranking and caliber. Like the Ivies and other top USNWR schools, they get boatloads of well-qualified applications.</p>
<p>Unlike the other schools, most of the applicants who do not get in are placed on the waitlist rather than being rejected. I'd be curious to know if they release those figures.</p>
<p>At any rate, here are some of this past April's threads:</p>
<p>Some will say that the rejected students either don't bother to post or are embarrased to post. Most Wash U applicants cross-apply to other fine schools. There are countless rejections listed on those boards, so that argument doesn't hold water.</p>
<p>That being said, a school's admissions office has little do do with the actual day to day life that a student experiences once enrolled. Once again, Wash U is a terrific school.</p>