GradingCalc is a free grading app for teachers.
Imagine this scenario: You just scored individual questions on a stack of papers and now you need to calculate grades. Simply start entering the points gained or lost into the app and see it calculate the overall percentage, total points, and lost points. Now press reset to calculate the next paper. Better yet, entirely use the keyboard for maximum efficiency. Use the return key to go to the next line and command-R to reset.
Scoring can be done in two modes: Lost or gained points which can be selected via a popup menu. In lost points mode, the points are subtracted from a total score. In gain points mode, the points are added from zero. There is also a convenient table of values generated calculating the percentage corresponding to the number of points gained or lost.
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