TooOld - I think we are in agreement that it is not the Michigan high school students who are changing, except for a modest decline of total numbers. As you note, the fraction meeting or exceeding specific high scores has risen, just as the fraction across the country has risen. The difference is in the pool of OOS students. Put differently, there is no evidence presented on this thread that the scores of Michigan high school students, either the median or the top few percent have changed compared to relevant national averages. Your numbers in post 52 bear that out. What’s changed over the decades is the pool of out of state students willing to pay out of state prices to go to UM. Secondarily there has been a modest decline in the Michigan high school population. But the real change over the years has been the number of top test scorers from other states who apply to UM