The SAT Reasoning Test is required for admissions by most U.S. colleges and often used to award scholarships and grants. The SAT Reasoning Test is 3 hours and 45 minutes long and is comprised of three content areas--Critical Reading, Math, and Writing. The individual content areas are scored on a 200-800 scale, with a maximum score of 2400. The SAT Reasoning Test is taken during second semester of the junior or senior year.
The SAT Subject Tests should be taken at the conclusion of the junior year, the beginning of the senior year, or upon a completion of a specific subject. The Subject Tests are designed to measure knowledge skills and application in a specific subjects like math, science, social science, and languags. Subject tests are no longer required by UC's, but California State Universities "recommend" taking SAT subject tests if it will help students become more competetive when applying to universities. Majors in science, technology, engineering and math (STEM) are some areas where taking the subject tests would be beneficial.