<p>I've since been on the annoyingly uninformative National Merit Scholarship program Web site, and indeed I don't see any requirement that the SAT scores have to be from an administration AFTER one's PSAT administration, so you can strike out the "taken after" from my reply above. A lot of kids who have done talent search testing at middle-school ages would probably have sufficiently high SAT scores to go from semifinalist to finalist, even if they didn't take the SAT I a second time. </p>
<p>I suppose the definitive answer about what to submit is the form that is sent out to semifinalists each year. It's regrettable that that is not posted on the Web.</p>