<p>From the 2009 PSAT student guide: “A participant can be considered for Semifinalist standing in only one state or selection unit, based on the high school in which the student is regularly enrolled when taking the PSAT/NMSQT.”</p>
<p>The National Merit Scholarship Corporation has established several other selection units which are: DC, “US commonwealths & territories, schools in other countries that enroll US citizens, and US boarding schools that enroll a sizeable proportion of their students from outside the state in which the school is located.” I think these are all separate selection units.</p>
<p>So, if you set up a <em>boarding</em> school in West Virginia, the students would have to compete against US boarding school students, and that’s one of the highest cutoffs, if not the very highest, each year. On the other hand, it looks as though a day school . . .</p>