The American curriculum is different from China. We have the same courses in China. It mean almost all students study the same content. Although some courses are divided into different levels, we can hardly learn across grades or choose different courses. American curriculum gives students more rights to choose. There are some basic lessons that everyone must learn, such as Humanities. What’s more, the school also provide courses for students to choose according to their own interests, such as many sports lessons. Students can study across the grade according to the students' different levels of learning. I select 7 subjects this semester. They are Conceptual Physics, Cross Country, Calculus1-4(F), English Language learning, Humanities, Engineering, Rock Band. Because I am good at math, so I have the Calculus1-4(F) class with 12 grade students. What’s more, I get very good scores. I am very happy.