My university doesn't use the +/- system when it comes to grades. They just give 1.0, 2,0, 3.0, and 4.0. In other words, if you have an 83, 85, or even an 89 average in a class, the grade you get for it is just a 3.0.
So there is no possibility of making a B+. The fact is, if I can't make an A, I will get just a plain old B, and then I can kiss AA school goodbye.