There are two kinds of college entrance examinations in the United States, one is called SAT (Academic Assessment Examination) and the other is called ACT (American College Test).

Generally, high school students can take the exam as many times as they want. The score of college entrance examination is not the only determinant of university admission, but generally only plays a decisive role of about 40%. Other factors, such as teachers' letters of recommendation, letters of recommendation, high school GPA and high school ranking, are all important.