The SAT is a standardized college entrance exam administered by the Educational Testing Service (ETS) on behalf of the nonprofit College Board, that measures reading, writing and math skills. In addition, students may choose to take the SAT Subject Tests in English, history, languages, math and science to demonstrate their knowledge in specific academic areas. Most students take the SAT during their junior or senior year of high school. For admission, the University of Missouri considers a combination of a student’s ACT or SAT score and class rank or grade point average.