These two factors, which tend to define educational requirements
from an occupational standpoint, obviously explain some of the increase
in mass schooling, but just as clearly they do not explain all of it.
A complete picture of the functions and functioning of education in the
United States and other capitalist countries would require a thorough historical
study of the manner in which the present standards came into being, and
how they were related, at each step of their formation, to the social forces
of the society at large. But even a sketch of the recent period suffices
to show that many causes, most of them bearing no direct relationship to
the educational requirements of the job structure, have been at work (302-303).