<p>TerpGuy,</p>
<p>“Why not use all predictors available?”</p>
<p>Because they’re not predictors at some schools, like Maryland. In looking at the writing scores of their students and their performance at Maryland, the school has discovered that high writing scores don’t predict success at Maryland and low writing scores don’t predict failure.</p>
<p>“Out of curiosity, why the discrepancy there?”</p>
<p>I’d only be speculating. However, it’s entirely believable to me that the writing section might be relevant at one place and not at another. Each school is looking for students that match the school’s goals and mission. Different talents and skills may be relevant at each school. I know that Hopkins has also done their own research and found little correlation between the writing score and success at Hopkins.</p>
<p>Generally, I wouldn’t be surprised to find schools with a heavy liberal arts emphasis might find the writing section more correlative than schools with a heavier science, engineering and technology emphasis.</p>
<p>Another possible difference is in the nature of the writing test, itself. It’s generally acknowledged by most folks involved in intelligence testing that the verbal and math sections of the SAT are pretty much a form of a modified IQ test. Students who do well on the SAT, especially at the level of the median Maryland student, have the underlying ability to write sufficiently well to achieve great things in college.</p>
<p>I’m speculating some, but my guess is that the writing test is a little less about fundamental ability and more about actual achievement. In other words, it doesn’t measure potential but rather how much potential has so far been actualized.</p>
<p>Many schools, even selective schools, are set up to work with students who have the potential to write well but may not have yet realized that potential. The writing score may not correlate well with having an as-yet undeveloped potential.</p>
<p>Conversely, folks who go to Harvard need to arrive with a high degree of already-developed writing skill. It’s tough to survive without it.</p>
<p>There are likely other more subtle correlations that I’m missing entirely. It may be that neither Harvard or Maryland completely understand what it is for which each institution is looking in a prospective student that either correlates or fails to correlate with the SAT Writing score.</p>