<p>We use the number system (0-100) for most classes, except AP and college classes, which we use letters. (A-F)</p>
<p>So, number wise, I have about a 91 and I have several letter grades from AP classes</p>
<p>Anyway, I just want to know how to convert my NUMBER (91) grade to a 4.0 scale and I also want to know if AP classes get raised GPA wise compared to normal classes</p>
<p>I wouldn't do it that way. Look at what the GPA numbers represent: a 4.0 is an A, but an A percentage-wise is a 90. A 3.6 would be like a low B+. Your GPA is probably 4.0 or close to it.</p>
<p>Also colleges look mainly at your unweighted GPA which means AP classes don't get some sort of boost.</p>