PSAT: The Preliminary Scholastic Aptitude Test  (PSAT) is given in the Fall at Potosi High School. Sophomores take the  test as part of the nomination process for the Missouri Scholars  Academy and as practice for the junior year when they may enter the  National Merit Scholarship competition. Juniors interested in the  competition must take the PSAT to be considered. Sophomores and Juniors can take the PSAT as practice for the SAT.