D UP: Do you have some authority for this? I'm not saying you are wrong, because I don't know, and I've tried to get the answer to standards for schools and conferences, to no avail. I do know that programs within a conference can set whatever higher standards they want, and that for example NW and Wisc have standards clearly higher than NCAA or B10 minimums. It's well documented that HC Anderson left Wisc for Oregon State, in part because he was not allowed to sign marginal recruits that went elsewhere, including KState. It's also fact that the B12 signs significantly more Jucos than other Power 5 conferences. Each program is different, regardless of conference minimums.
What usually happens with those schools is they have allotment of scholarships they can fill with kids at different levels. So maybe they have 5 scholarships a year they can use on kids that would make University requirements but they still make it under conference rules.