SAT is an aptitude test, a so-called "college entrance examination" for American high school students, but whether you can go to a four-year university does not depend on a SAT score. SAT is held by College Board in the United States, 7 times a year in the United States and 6 times a year in other places. The exam is English, which is divided into three parts, reading, math and writing. Reading includes practical problems and critical reading. For China students, mathematics is relatively simple, but its fault tolerance rate is low. Writing is divided into short essays and grammatical problems.

SAT 1 is an examination to examine students' learning ability.

SAT2 is actually a sat subject exam, which is a professional exam. Generally, only the top 20 universities require students to submit. List of subjects: writing literature, American history, world history, mathematics level 1 mathematics level 2) biology (student things), chemical physics (physics), Chinese with hearing (Chinese with hearing), French with hearing (French with hearing), German with hearing (German with hearing), modern Hebrew (Italian), Japanese with hearing (Japanese with hearing) and Korean with hearing (Korean)

SAT2 is actually a professional course exam, which shows the level of students in professional fields to universities. Universities that need this grade generally require at least 2 grades, and candidates generally take 3 courses. Students in China mainly choose Math II, Physics and Chemistry. Biology is more difficult, because the language is unreasonable, and fewer students choose liberal arts.