Easy Grader
A fast EZ grader for a stack of tests: type the number wrong and get the score and letter instantly, or print a one-page grading chart for any test length.
Each question is worth 5%.
The most common US convention: A 90–100, B 80–89, C 70–79, D 60–69, F below 60.
Quick lookup
Press Enter to log it and clear for the next paper.
Type a number to see the score and grade instantly.
Cutoffs for 20 questions
- A 0–2 wrong
- B 3–4 wrong
- C 5–6 wrong
- D 7–8 wrong
- F 9–20 wrong
Grading chart
| Wrong | Correct | Score | Grade |
|---|---|---|---|
| 0 | 20 | 100% | A |
| 1 | 19 | 95% | A |
| 2 | 18 | 90% | Alast A |
| 3 | 17 | 85% | B |
| 4 | 16 | 80% | Blast B |
| 5 | 15 | 75% | C |
| 6 | 14 | 70% | Clast C |
| 7 | 13 | 65% | D |
| 8 | 12 | 60% | Dlast D |
| 9 | 11 | 55% | F |
| 10 | 10 | 50% | F |
| 11 | 9 | 45% | F |
| 12 | 8 | 40% | F |
| 13 | 7 | 35% | F |
| 14 | 6 | 30% | F |
| 15 | 5 | 25% | F |
| 16 | 4 | 20% | F |
| 17 | 3 | 15% | F |
| 18 | 2 | 10% | F |
| 19 | 1 | 5% | F |
| 20 | 0 | 0% | F |
Bold rows marked last are the lowest result that still earns that grade. The letter follows the score as displayed (rounded to a whole percent).
Grading a stack in one pass
Set the number of questions and your grading scale once. Then mark every paper first, writing the number wrong at the top, and only afterwards sit down with the quick lookup. Type a count, read the grade, write it on the paper, press Enter. Enter logs the result and clears the box, so the next number goes straight in without touching the mouse. The numbered list under the box matches the order of your pile, which makes it easy to spot a slip before the grades go into the gradebook.
If you count correct answers rather than mistakes, switch Count to Correct. The lookup and the chart then work from the number right.
Half credit and points-based tests
For short-answer questions where you give half marks, set partial credit to 0.5 (or 0.25 for finer work). The chart gains a row for every half step and the lookup accepts entries like 2.5.
When questions are worth different amounts, say a 37-point test with a few two- and three-point items, switch to Total points. Enter the points available, then look up the points missed on each paper. The arithmetic is the same; only the unit changes.
Choosing a grading scale
- Standard 10-point: A 90, B 80, C 70, D 60. The default in most US classrooms.
- 10-point with + and −: each band split into thirds (B+ 87, B 83, B− 80). Use it if your gradebook records plus and minus grades.
- 7-point: A 93, B 85, C 77, D 70. Used by some districts; check your handbook before relying on it.
- Custom: type your own letters and minimum percentages, add or remove rows. Useful for departments with their own cutoffs or for pass/fail checks.
Pay attention to rounding. The letter follows the score as shown, so on the whole-percent setting 89.5% displays as 90% and earns an A on a 10-point scale. If your school does not round up, choose one or two decimal places so a score like 89.5% stays a B.
Bold rows marked “last” show the most mistakes a student can make and still keep each grade. The row of chips above the chart gives the same information at a glance, and lists any grade that no score can reach (on a 10-question test with plus/minus grades, for example, nobody can get a plain A: one wrong is already 90%, an A−).
Why the deduction per question is the number that matters
The single most useful thing a grading chart tells you is how much one mistake costs, and that depends entirely on how many questions you set:
| Questions | Each worth | Wrong answers still scoring 90%+ |
|---|---|---|
| 10 | 10 points | 1 |
| 20 | 5 points | 2 |
| 25 | 4 points | 2 |
| 40 | 2.5 points | 4 |
| 50 | 2 points | 5 |
A ten-question quiz has no B range worth speaking of: one wrong is 90%, two is 80%, three is 70%. Every mistake moves a whole letter grade. If you want a quiz that separates students rather than sorting them into three coarse buckets, twenty questions is a practical floor. Counts that divide into 100 (10, 20, 25, 50) give whole-number percentages that are easy to check by eye; awkward counts like 13 or 27 are where a chart earns its keep.
Printing a chart for your answer key
Print chart gives a plain sheet with no site navigation or ads, laid out in columns so a 100-question chart fits on one page. Add a title such as the quiz name and it prints at the top, with the cutoffs for each grade summarised underneath. Clip it to the answer key and the next class period needs no screen at all.
Your settings are remembered in this browser, and the page address carries the question count and scale (for example ?q=25&scale=7pt), so a bookmarked or shared link opens the same chart.
Related tools
Grading one paper rather than a stack? The test grade calculator gives a single score and letter. To turn a set of graded assessments into an overall course grade, use the weighted grade calculator.
Frequently asked questions
How do I grade a stack of tests quickly with this?
Set the number of questions once, then click into Quick lookup. Type the number wrong on each paper and press Enter: the score and letter appear as you type, Enter logs the result and clears the box for the next paper. Your hands never leave the keyboard.
Is an EZ grader the same thing as an easy grader?
Yes. EZ grader, easy grader and quick grader are all names for the same tool: a chart that lists the percentage and letter grade for every possible number of wrong answers on a test of a given length.
How is the percentage calculated?
Score = (total − number wrong) ÷ total × 100. For example, 3 wrong on a 25-question test is 22 ÷ 25 = 88%. In total-points mode the same formula uses points instead of questions.
Can I give half credit?
Yes. Set Partial credit to half (0.5) or quarter (0.25). The chart then has a row for every half or quarter step, and Quick lookup accepts decimals such as 2.5 wrong.
Which grading scales are included?
A standard 10-point scale (A 90, B 80, C 70, D 60), the same scale split into plus and minus grades (A+ 97 down to D− 60), a 7-point scale used by some districts (A 93, B 85, C 77, D 70), and a custom option where you type your own letters and minimum percentages.
Does rounding change the letter grade?
It can. The letter always follows the score as displayed, so with whole-percent rounding an 89.5% shows as 90% and earns the 90 cutoff. If your school does not round up, switch to 1 or 2 decimals so an 89.5% stays a B.
Can I print the chart?
Yes. Print chart produces a clean sheet without the site header, footer or ads, laid out in columns so a 100-question chart fits on one page. You can add a title such as the quiz name before printing.
Will it remember my settings?
Your last settings are saved in this browser, so the chart is ready the next time you open the page. The address bar also updates (for example ?q=25&scale=7pt), so you can bookmark a chart or send the link to a colleague.
How many points is each question worth?
Divide 100 by the number of questions. On a 20-question test each is worth 5 points, on a 25-question test 4 points, on a 50-question test 2 points. The tool shows this figure under the question count.
Should I include extra-credit questions in the total?
It is cleaner not to. Score the test out of the base question count so the chart stays valid for the whole class, then add bonus points on top of the resulting percentage.