To apply for a prestigious American university, you need to prepare the following aspects: 1. GPA (academic achievement): The GPA (average grade point average) of students in high school is one of the important references for admission to famous American schools. 2.SAT (Academic Assessment Test) or ACT (American College Test) scores: These two tests are the admission standards of famous American schools and need to be prepared and taken in advance. 3. Personal statement: Personal statement is a way for students to sell themselves to the school, and it is necessary to explain their strengths, ambitions, career plans, etc. 4. Letter of recommendation: Students need to find a teacher or public figure to write a letter of recommendation to show their outstanding performance in academics, leadership and volunteer service. 5. Extracurricular activities outside school: Participating in extracurricular activities outside school is also one of the considerations for admission to prestigious schools, which may include community service, academic competitions, sports, student unions, etc. 6. Ability: Students need to be proficient in English, so they need to take the TOEFL or IELTS test and get some results. 7. Special talents or achievements: If students have special talents or achievements, such as music, art, sports, etc. , they can also be displayed at the time of application. 8. Others: Other relevant materials that need to be prepared, such as students' school certificates, transcripts, passports, etc.