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The largest study of AI use by undergrads is in, revealing disparities in access — and in cheating
(www.universityofcalifornia.edu)
This is a most excellent place for technology news and articles.
I would translate that as, "The people who fought harder to get into higher education value it more and actually want to learn, so they're more likely to do their own work. The ones who are just there because it was kind of expected of them don't care about learning and would be happy to just get handed the piece of paper."