Data: What is the IQ of the average black person with an advanced degree?

We know that colleges have gotten less selective as they have tried to boost the numbers of blacks and Hispanics.  (In fact, as higher education has gotten more egalitarian, it has become less selective for all races.)  My guess is that mean IQ for blacks of a given degree level has dropped over the past few decades.  Here's what GSS data say (N = 3,856):

It looks like I'm right, but only for graduate school.  Mean IQ in the 70s was 112, but now it has fallen all the way to 101.  For a 4-year degree, the average has hovered around 100.

Two things really strike me.  First, the average black with a Master's degree or higher has an IQ close to the average white in the general population. That really needs no comment, but you can imagine what the thesis is going to look like (if a thesis is even required).

Second, a black person with an advanced degree is basically not smarter than one with a bachelor's.  Universities are not recruiting a select bunch out of the pool of college graduates. They're selecting on other traits like who thinks a teaching assistantship sounds preferable to a real job.