That's an educational institution issue. This is seriously sensitive stuff for universities, and was liable to end in lawsuits... as this thread proves occurred. They surely will have tried to restrict access when they found out what it was being used to do.I wouldn't know how to distinguish one from the other, but one example from the book is that the Law School Admissions Council. They administer the LSAT exam and were also the largest single funder of the data-gathering study that was central to Sander's work called "After the JD".
LSAC didn't like Sander's work, so they tried to demand that "all scholarship coming from AJD be "cleared" with it before publication", which didn't work as that was an obviously unethical, and nobody had ever agreed to anything like that when they first started working with AJD. Next, they said that they'd withhold funding AJD if Sander was still on the coordinating committee. At this time, Sander had already moved on, but they scrubbed all mention of him from the project. Around this time, LSAC also fired a senior staff member who had been "contentiously accused of being too sympathetic to [Sander's] work".
Previously to all of this, in the 1970s, people accused the LSAT, and therefore, LSAC, of being biased against minorities, so they were trying to shake that image. This was one of the ways in which they tried to do that.
So is this a problem of bias in educational institutions or in academic research, because here we clearly see an institution bullying a research group because the former didn't like the scholarship coming out of the latter? Like I said, I don't know.
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Universities are actually in a difficult place here. Universities have varied "stakeholders". One one level, you've got students who expect to pass their grades, enter, and get a degree. However, universities also have social responsibilities and have to consider more than just grades. For instance, a university may reasonably consider that an important part of its process is for students to experience a diverse environment at least somewhat representative of the real world out there; it benefits all students to be exposed to diversity, which demands where practical to try to encourage more than tokenistic presence of difference. If it's chock-a-block with whites and Asians and not much anyone else, it's going to fail. There's the idea that adequate representation of minorities is a general societal good, and universities have some duty to encourage that in the societies that they exist in to serve, particularly as long-standing issues leave some demographics structurally disadvantaged.
The thing is, Sander is aware of the political context of his work. It's not just that some have been testing his basic quantitative analyses (and sometimes finding them deficient), but many of the criticisms levelled at him are precisely that his understanding of the political context is quite poor, and not really handled by his analysis. But the ramifications of his study are potentially very great. From my reading, Sander makes some sort of general protestations about how his work should or should not be used, but the end result is that it has been, and was always going to be, used to bludgeon affirmative action to death by people with no real interest in "truth", but sheer ideological possession every bit as zealous and unbending as some of those would oppose Sander's work. Sander might well feel aggrieved at the hostility he has received, but I read through various exchanges it is evident he has more than his fair share of intransigence and belligerence.