So how do you stop this from happening? The OP pointed out a highly informative and important point and the majority of the negative responses to it have been

So how do you stop this from happening? The OP pointed out a highly informative and important point and the majority of the negative responses to it have been from people who want to bash the American education system. They are using cries of racism and bringing in irrelevant topics like IQ intentionally so that they can shut down legitimate conversation because they want to continue to bash the American education system.