Is it difficult for China students to study algerbra 2 in Maryland?

American students are graded from primary school. The algebra 1 class you are in now may be in the lower grades, so it seems that they are stupid. I suggest you study English well. Learning English well is talking about something else. Children in China are generally not bad at math. And the math level in America should be algebra 1, geometry, algebra 2, preparatory calculus, calculus. So you must finish geometry before you can learn algebra 2.