"Black Americans receive about 7 percent of the doctoral degrees awarded each year across all disciplines, but they have received just 1 percent of those granted over the last decade in mathematics."
https://www.nytimes.com/2019/02/18/us/edray-goins-black-math...
And this is the current production! You don't want to see the statistics regarding the number of African American faculty members in mathematics!
So what else is our current system perpetuating besides inequality? What exactly are we "weeding out" in calculus? Or college algebra?
We don't let kids trust themselves intellectually in the classroom.