SAT (Academic Aptitude Test) is an examination organized by the American College Committee and entrusted by the American Educational Testing Center (ETS). Together with ACT, SAT is one of the important reference conditions for American universities to apply for admission. Commonly known as "American College Entrance Examination".

SAT is divided into SAT reasoning test (also called SAT I) and SAT subject test (also called SAT II). SAT generally refers to SAT reasoning test (SAT I).

Now the total score of SAT is 1600, including evidence-based reading and writing, mathematics and composition, in which composition is optional.

At present, the SAT subject test consists of 20 subjects, which are divided into five areas: mathematics (including mathematics 1 and mathematics 2), science (including physics, chemistry, ecology and molecular biology), English, history and foreign languages (including Chinese, French and Spanish). The full score of the SAT is 800.