If you are thinking of moving on to graduate school or business school after college, then test prep for the Graduate Record Examination (GRE) will help you prepare to take the GRE as well as one or more of the GRE Subject Tests (Biochemistry, Cell and Molecular Biology; Biology; Chemistry; Literature in English; Mathematics; Physics; or Psychology) if any of these areas relate to your major. Similar to the SAT and SAT II Subject Tests, the GRE and GRE Subject Tests help quantify your knowledge of specific subjects so that potential graduate and business schools can select the right candidates.