Enter your quiz or assignment scores below and this Lowest Grade Drop Calculator will remove your lowest score and recalculate your new average. Add up to 10 scores in the Scores fields, choose how many lowest grades to drop, and see your adjusted average, dropped score(s), and original average side by side.
Adjusted Average (After Drop)
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Original Average (Before Drop)
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Grade Improvement
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Dropped Score(s)
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Scores Counted
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The calculator collects all the scores you enter, sorts them from lowest to highest, removes the number of lowest scores you specified, and then computes the arithmetic mean of the remaining scores. The result is your new adjusted average, which you can compare directly to your original average.
Yes — removing a below-average score will always raise (or at worst maintain) your mean. The improvement depends on how far below the average the dropped score was. A score of 52% dropped from a class averaging 85% will boost your grade significantly more than dropping a 79% from the same average.
Simply enter all of your raw scores into the calculator and set the 'Number of Lowest Scores to Drop' field to match your syllabus policy. The calculator automatically identifies and removes the lowest value(s) before computing your adjusted average.
Yes. Many instructors drop the two or even three lowest quiz grades. Use the drop selector to choose 1, 2, or 3 scores to remove. Just make sure you have entered enough scores — the calculator needs at least one score remaining after the drop to produce a valid result.
Enter all scores on the same scale — either all as percentages (e.g., 78, 85, 92) or all as raw points out of the same maximum. If your assignments have different point totals, convert each to a percentage first before entering them here, unless your instructor treats all assignments as equal weight.
This calculator assumes all entered scores carry equal weight — a common policy for quizzes and homework assignments. If your dropped assignments have different weights, you would need a weighted grade calculator. Check your syllabus to confirm whether scores are equally weighted before using the drop feature.
Differences can arise if your professor uses weighted categories, applies a curve, rounds grades differently, or counts participation and extra credit. This tool computes a straightforward unweighted average after dropping the lowest score(s), so always cross-check with your official gradebook for the most accurate picture.
Standard letter grade cutoffs are: A (90–100%), B (80–89%), C (70–79%), D (60–69%), and F (below 60%). However, grading scales vary by school and instructor, so confirm the exact cutoffs in your course syllabus.