SAT is an exam hosted by the College Board. Its scores are an important reference for high school students around the world to apply for admission to American universities and scholarships. It and ACT (American College Test) are both called the American college entrance examination, but not all universities require this exam. Some top universities do not require it in terms of admission requirements. Students can use other scores instead. When applying for a university, you need to carefully check the admission requirements of the school. After the 2016 reform, the new SAT has a total score of 1600 points, divided into three parts: reading, grammar and mathematics, and writing is changed to an optional test. ETS is responsible for its question setting and marking. However, they are only one of the reference materials for admission to students, and they do not play a completely decisive factor. The score is valid for 2 years.