what evidence and what data? I studied math in Syria and was doing Calculus at 8th grade, came to the states and was forced to redo basic algebra. Do you know h

what evidence and what data? I studied math in Syria and was doing Calculus at 8th grade, came to the states and was forced to redo basic algebra. Do you know how soul crushing it is to redo those classes? edit: I dont understand how poor war-torn countries can have a better educational system than the most developed country in the world.