Mathematics in American middle schools is very simple. After the students from China came, everyone acted like a math genius. In fact, learning in American high schools is not simple, especially in private high schools that train students to enter universities in the future. They generally call themselves pre-university schools. When ninth-grade high school students enter school, they often have to take the math placement test, so that the school can divide them into different classes according to their own level. The difficulty can range from simple geometry to increasingly difficult algebra 1, algebra 2, pre-calculus and even calculus.
Mathematics in American senior high schools generally includes: the basis of functions, linear functions, linear equations, matrices, quadratic functions, polynomial functions, exponential functions and logarithmic functions, rational functions and root functions, the properties and attributes of functions, conic curves, probability and statistics, series and series, trigonometric functions, trigonometric function drawing and characteristics, etc.