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<p>According to [Michigan’s</a> common data set](<a href=“U-M Office of the VPIT-CIO | Office of the VPIT-CIO | University of Michigan”>Office of Budget and Planning), the middle 50% of freshmen had ACT scores of 27 to 31 (with ACT math 27 to 33). So your son’s ACT scores are in the top 25% of freshmen at Michigan, so acceptance is fairly likely with that and a GPA of 4.0.</p>