Grades 2

I thought this assignment was a little difficult. The IF and COUNTIF functions were new to me. I had to figure them out, but once I did it was alright. I used 93 as an A, 83 as a B and so forth. I hope I did everything else right. I know it said to have the percentages, but when you put the cursor over the different parts of the pie chart, it will say the percentage, so I am taking that as enough. This is my grades2 exercise :)