The problem of high school students immigrating to the United States.

Your English will be tested in high school, but your English level is very simple. It's almost the same as in Chinese mainland, so don't worry. I immigrated from high school, so I know. The result of the English test will determine whether you want to take a language class or take it with Americans. The so-called language class is just a little less difficult, and the course is the same, so don't worry. After entering the school, you may have to take a math exam. You don't need to worry about the exam, because this exam is to test your math ability, and then you will be assigned a course that suits your level (math is also an English exam, and you can use a dictionary). American high schools look at individual curriculum level, not fixed classes. In other words, if you have high ability, you can take classes with senior students, so you will see students from grade one to grade four in a class.