There are lots of "prestigious" schools with strong athletics programs (Duke, Stanford, Michigan, UNC, UVA, Texas, etc) but they don't necessarily hold athletes to the same standards as everyone else.
Universities (especially state universities) are like small cities. In your city, the butcher, baker and candlestick maker might be the best in the land, but the crime might still be high. Similarly, the fact that Michigan has a high-ranked law school, or med school, or graduate program in this or that, is taken by Michigan fans as evidence that their athletics programs are clean. In reality, of course, there is no relation.
Not only is there no evidence that athletes are held to the same standards, but Michigan has also had UNC-style scams (see link below). I guess they can be grateful that their administration lied to the NCAA and then the NCAA backed off.