How to read the grading chart
Each row is one possible number wrong. Find how many questions the student missed in the Wrong column; the same row shows the number right, the percent score and the letter grade. On a 20-question test with 3 wrong, the row reads 17 right, 85%, B. For more than 100 questions, half points or extra credit, use the grading calculator. For a single score like 36/42, the percentage grade calculator gives the percent and letter. Charts with a worked example for one test length: the 20 question grading scale, the 40 question grading scale and the 50 question grading scale.
How the scores are calculated
Score % = (questions − wrong) ÷ questions × 100
Scores are rounded half up to the decimals you choose. Example: 30 questions, 7 wrong. 23 ÷ 30 × 100 = 76.67%, printed as 77% with no decimals, a C on the standard scale. Each question is worth 100 ÷ the number of questions: 5 points on a 20-question test, 4 points on 25 questions, 2 points on 50.
Printing the chart
Press Print chart. Only the chart is printed, with its question count, letter scale, rounding rule and the site address; the header, buttons and text are left out. Charts up to 100 questions fit on one Letter or A4 page, in up to four columns. To keep a copy, choose Save as PDF in the print dialog.
For a stack of tests with different lengths, download the free printable grading charts for 5 to 50 questions (PDF, 47 pages, 205 KB): one chart per page on the Standard A–F scale with whole percents, rounded to the nearest, and no ads. Print only the pages you need.
Letter scales
The chart uses the scale you pick: Standard A–F (A from 90, B from 80, C from 70, D from 60), plus-minus or pass-fail. Cut-offs you changed in the grading calculator on this device are used here too and marked “custom”. Schools and districts set their own scales, so check your grading policy; the grading scale page shows how published school scales differ. Where the letter lines come from: the School District of Palm Beach County and Roanoke County Public Schools both publish A 90–100, B 80–89, C 70–79, D 60–69, F below 60.
Grading chart questions
How do I read a grading chart?
Find the number of questions the student missed in the Wrong column. The same row shows the number right, the percent score and the letter grade. On a 20-question test with 3 wrong, the row reads 17 right, 85%, B.
How many points is each question worth?
Divide 100 by the number of questions. Each question is worth 5 points on a 20-question test, 4 points on a 25-question test and 2 points on a 50-question test.
Does the chart round the scores?
Yes, half up to the decimals you choose, the same rule as the grading calculator. With no decimals 89.5% prints as 90% and earns an A on the standard scale. Choose "Never round up" and the score is cut instead, so 89.5% stays a B.
Can I use the chart for a test scored in points?
Yes, if every question is worth one point: enter the total points as the number of questions and read each row as points lost. For questions worth different points, use Points earned in the grading calculator.