The tension here is that educational achievement is a proxy measurement for IQ and in capitalist societies IQ is directly correlated with income. The cultural ideal here in the US is that hard work, effort, and grit is what is necessary for success. It is supposed to be purely egalitarian; you get what you give. However whether you are born with a high IQ is purely random, and even worse IQ is heritable. This is creating a technocracy which is at odds with the egalitarian ideal. This along with the expanding wealth gap is causing the schism you see today.