Teachers do not enter letter grades, only % grades.
Here's a cautionary tale some of you may enjoy or benefit from knowing: In a computerized system which calculated course grades and grade point average to four decimal places, teachers learned they could assign numerical grades to several decimal places. For example, a teacher might enter 94.9999 or 95.0001 for an essay grade. In this particular electronic grade reporting system, once grades were "rolled up" at the end of the grading period, the detail of each assigned grade was not available to be viewed. Therefore entering grades in the electronic gradebook on the last possible day allowed a small window of opportunity for viewing these detail assignment grades prior to their "roll up" or summation.
However a curious, conscientious gifted kid with an interest in math happened to discover this pattern. When a particular teacher consistently entered grades on the last possible day, and several subjective assignments received grades to several decimal points, it gave the appearance of "designer grades" and attempting to manipulate student GPA and transcripted letter grades, while reducing access to the "paper trail" of individual assignment grades. For example, 95.0001 or 95.1234 for an essay grade might result in a student course final grade of A, while 94.9999 or 94.8765 for the essay grade would result in a student course final grade of A-.
