Make a random set of scores as integers, then translate them to a letter based grading system

Summarize the end grade at the bottom

Your Score: 92/100 - Your Grade is A.

Your Score: 66/100 - Your Grade is D.

Your Score: 93/100 - Your Grade is A.

Your Score: 67/100 - Your Grade is D.

Your Score: 64/100 - Your Grade is D.

Your Score: 86/100 - Your Grade is B.

Your Score: 61/100 - Your Grade is D.

Your Score: 63/100 - Your Grade is D.

Your Score: 86/100 - Your Grade is B.

Your Score: 95/100 - Your Grade is A.

Your Final Score: 774, so your grade is a C