SAT 1, also called SAT reasoning test, is generally called sat directly.

SAT test is divided into two parts: reasoning test SATⅱ (subject test. SAT 1 mainly tests candidates' writing, reading and math abilities; SAT2 involves mathematics, physics, chemistry and biology. Students in China usually choose three subjects: Mathematics, Physics, Chemistry and Biology. Generally, high school students in China can apply for admission to American undergraduate schools only by taking the SAT Ⅰ I exam. Compared with TOEFL, SAT is not a language test, but it is a unified test all over the world, including American high school students, so it is much more difficult to learn words than TOEFL. Especially after the reform of SAT in March 2005, the new writing part is a test of students' pure English language ability, which is beyond TOEFL and IELTS. Therefore, it is a big mistake for China students to understand SAT only as language-based reasoning and special tests. On the contrary, it requires a higher language level than TOEFL.