I think the answer is more in the area of who is teaching in private schools and those public schools in good neighborhoods. as bad as public schools in the low income areas are you have to be a tough cookie if you go to one able to handle getting your feelings hurt. this crap is coming from the top universities that get most of there students from private schools and public schools in wealthy neighborhoods.
The intent of their education was to desensitize the kids and insert a specific brand of amorality which has the potential of helping kids to easily become sociopaths on their way to becoming socialists.
The reason why they practiced with the inner city schools was because most of the kids were being raised by single mothers who would not be aware that their kids were being experimented on.
This is the very reason why professors have noted that incoming freshmen already exhibit these traits. They do not learn them in college, but in grades 4 through 7. Those are the ages they have found to be the most helpful to turn a kid away from their moral roots.
Common Core is the full realization of this type of education.