Hey there,
Your question states: What do you think is the purpose of the education system in the United States?
Me personally, I believe that the purpose in the education system in the United States would be to teach youngsters and also old people to take care of the society. To learn on how to become a doctrine or a EMT to help around the US. I think this would be the reason of the the education system in the United States.
Hope this would help you :)
~Jurgen