How hard is the American Education system?

I'm now finishing up middle school in Korea but I'm wondering how hard the education system is in the states. I really want to move there during HS but my mom says USA's system is just as hard as Korea's

Edit: if you know any, what are some things I could point my mom to which shows the American system is easier? I really want to move there and I'm fine going to things like boarding schools and stuff.