There are no school districts in the United States, and public schools are generally poor. Of course, they are much better than China. The public is free, and the quality of teaching is not flattering. If parents can afford it, they will usually send it to private schools. There are two kinds of schools in America, semi-private schools and preparatory schools. It's good to be semi-private in the public, and it's good to be private in the preparatory course. If you want to attend two schools, the United States draws lots. Although there is no school district in the United States, many parents buy houses around private schools for the convenience of private schools. For example, there are two private middle schools in Silicon Valley, the largest rich area in the United States, which are the top 7% good schools in the country, and their houses have been fired. There is also a preparatory middle school in Silicon Valley. This kind of preparatory course is very interesting, that is, students from/kloc-0 to 3 have classes in a big classroom three times every three years, and the enrollment rate is high. If you want to go, it is a lottery for students in Silicon Valley, and the admission rate is 6%.
The biggest obstacle for American students to get into a good university is the economy, but his exam is not difficult. Because private universities generally have to study for seven years, and the tuition fee is 50,000-60,000 dollars a year. But it is said that 40% American families can afford it, and some parents still have teaching funds and so on.