It’s really simple. It was money. That is a huge, huge discount College Board gave Michigan. But understandable since CB has been losing ground for at least 5 years if not more to the ACT. The cost of retooling the high school prep classes is a burden on the individual high schools. I don’t think the high schools “taught” to the ACT as the ACT covers pretty basic concepts that are learned in high school. The prep classes (at least one one my kids’ high school had) mostly taught the kids how to work through the speed issue of the ACT…not the content of the ACT. Uof M doesn’t have to do anything different when reviewing applications so the impact is nil, unless the “new” SAT bombs as a test of whether kids are prepared for college.