What grades do I have to get in order to avoid getting my acceptance rescinded?

I was just going to state that, that is Michigan’s wording.

Here’s the deal. Michigan and others want you to still try to do your best. You are now getting ready for college. At Michigan a lot of students drop a complete grade point from their high school grades. Michigan is a very tough school. Don’t start to have this attitude. Yes, maybe don’t do any really late night studying or all nighters but don’t forget you are now preparing yourself for college.

I am confused why you are even asking the question. You are a good student… Keep doing that.