<p>University of Michigan is my dream school, and I was wondering which classes really matter, I know that they don't recalculate GPA, but they still can't look at an A in gym the same as an A in math. I was just asking this because my hardest class is jazz so I was wondering how much it would hurt me if I got a B+/A- in it. </p>
<p>Hmm, it appears as though you’re right. But regardless, the point stands. A single B+ isn’t going to make much of a difference from an A no matter what class it is unless you have low test scores/bad extra curriculars/bad essays, etc. A two-third letter grade difference for one class only changes your cumulative H.S. GPA by a few hundredths of a point. The fact that the class was something like jazz and not something like math or english makes it even less significant.</p>