Printable grading chart

Grading Scale for 30 Questions

Each question on a 30 question test is worth 3.33%. Find the score and letter grade for any number wrong — or print the chart and keep it next to the tests.

30 question test

A 90 · B 80 · C 70 · D 60 · each question 3.33%

WrongRightScoreGrade
030/30100%A
129/3097%A
228/3093%A
327/3090%A A−
426/3087%B B+
525/3083%B
624/3080%B B−
723/3077%C C+
822/3073%C
921/3070%C C−
1020/3067%D D+
1119/3063%D
1218/3060%D D−
1317/3057%F
1416/3053%F
1515/3050%F
WrongRightScoreGrade
1614/3047%F
1713/3043%F
1812/3040%F
1911/3037%F
2010/3033%F
219/3030%F
228/3027%F
237/3023%F
246/3020%F
255/3017%F
264/3013%F
273/3010%F
282/307%F
291/303%F
300/300%F

How many can you miss on a 30 question test?

GradeMinimumYou can miss
A90%up to 3 wrong
B80%up to 6 wrong
C70%up to 9 wrong
D60%up to 12 wrong

On a 30 question test, you can miss up to 3 and still get an A, and up to 6 for a B. Scores are rounded to the nearest whole percent, the way most teachers record them.

Scores out of 30

  • 29 out of 30 is 97% — A
  • 28 out of 30 is 93% — A
  • 27 out of 30 is 90% — A
  • 26 out of 30 is 87% — B
  • 25 out of 30 is 83% — B

Score = right ÷ 30 × 100

Half points and other scales

Giving half credit, or using your school’s own scale? The Easy Grader opens with 30questions: mark each wrong answer, add half points, switch to a plus/minus or custom scale, and print a chart that matches.

Frequently asked questions

How many can you miss on a 30 question test and get an A?

3. 27 out of 30 is 90%, still an A on the standard 90/80/70/60 scale.

How much is each question worth on a 30 question test?

3.33% — 100 divided by 30. Every wrong answer takes about 3.33 points off the score.

How many can you miss on a 30 question test and still pass?

Up to 12 wrong for a D (60%), the usual passing grade — that is 18 out of 30.

What is 29 out of 30 as a percentage?

29 out of 30 is 97% (29 ÷ 30 × 100), a A on the standard scale and an A on a plus/minus scale.

What is 28 out of 30 as a percentage?

28 out of 30 is 93% (28 ÷ 30 × 100), a A on the standard scale and an A on a plus/minus scale.