Does my son need a visa? Does he need finger prints because he is a minor?

My dad became very sick, and I need to take care of him for a long time,my place is too Small. Therefore.My son ( American) will travel to China to live with my wife(Chinese) for a while he will stay there with his mom and go to primary school as well.
Do I need to go with him to Chinese embassy in ny?( he will need to be absent from school ) or just me ,is enough?
I appreciate your help, thanks