What are the requirements for studying in the United States? | Requirements for studying in American high schools

As a country with a high number of students studying abroad, the United States is the first choice for many domestic students and parents. Entering the United States to receive education has become the first choice for international students. So, what are the conditions for studying in the United States? The following is about the conditions for studying in the United States, the conditions for studying in high schools in the United States, the conditions for studying in the United States for postgraduates, etc.