AP is a prerequisite course in American universities, and domestic students can use AP scores to help apply for and change credits. Although IB/A-level/AP are all early courses favored by international schools, AP courses are definitely more suitable for the United States. AP courses include art, English, mathematics and computer. Students can choose subject exams, and the three most popular courses are calculus, physics and economics. In addition to choosing the subjects you are good at according to your own situation, you can also choose the majors you want to study.