In the old days of partial qualifiers and the like ... with some frequency, the Hawks would take on guys who were possible academic liabilities ... and see if they could get academically rehabilitated. If memory serves, Edmund Miles was a partial qualifier ... he redshirted (for academic reasons - because he had to) ... and he ended up being a very solid Hawk. Even past the partial qualifier policy (that ultimately the NCAA got rid of - I think) ... guys like Carl Davis and Donavan Johnson were guys who were academically iffy coming out of high school. Johnson didn't make it (which is too bad ... really talented guy) ... but Carl got his act together and did very well for himself (and the Hawks).
What is interesting given your comments is that it certainly is true that it isn't uncommon for high school athletes to not take their academics seriously. The odd thing is that often the players are willing to work crazily hard as it relates to their sport of choice ... however, they often don't apply the same effort as it relates to their academics. In my experience, often students just don't have good academic habits ... and that undermines their academic success. In other instances, students don't see the point of their studies ... so they don't put in effort where they don't see value. Sometimes students can simply be lazy ... but given that most athletes know how to dedicate themselves to their sport ... I haven't often run into "lazy" athletes. Lastly, perhaps one of the bigger factors that undercuts academic performance is that nobody wants to be perceived as "stupid" ... consequently, some students will simply refuse to put in effort in their academics. It's a safer strategy for their ego to simply attribute their failures to "not trying" rather than linking it to any limitations they might have (perceived or otherwise).
From what I've read about Daviyon, he didn't really find his academic motivation until he "blew up" on the football field during his junior year. Once he realized that his ability could place him in P5 D1 football ... and potentially the NFL after that ... he realized that he had to shore up his academics. If he can continue to approach his academics with that same sense of urgency ... and take advantage of all the academic resources that Iowa has available to its athletes (which is substantial) ... he should be able to keep himself fully eligible.