20-Question Test Grading Chart – Wrong Answers to Grade
This printable 20-question test grading chart provides an instant score lookup table for classroom evaluations, quizzes, and unit assessments. On this test, each question is worth 5.0% of the final grade. Even 5% decrement per question with no fractional rounding required.
How Many Questions Can You Miss on a 20-Question Test?
Target score thresholds based on the standard 10-point academic grading scale:
| Target Grade | Minimum % | Maximum Wrong | Minimum Correct | Resulting Score | Grade Status |
|---|---|---|---|---|---|
| Grade A | 90% | 2 missed | 18 / 20 correct | 90% | A |
| Grade B | 80% | 4 missed | 16 / 20 correct | 80% | B |
| Grade C | 70% | 6 missed | 14 / 20 correct | 70% | C |
| Grade D | 60% | 8 missed | 12 / 20 correct | 60% | D |
| Wrong Answers | Correct Answers | Score % | Letter Grade | Plus/Minus Grade | Academic Standing |
|---|---|---|---|---|---|
| 0 missed | 20 / 20 | 100% | A | A+ | Exceptional Mastery |
| 1 missed | 19 / 20 | 95% | A | A | Superior Achievement |
| 2 missed | 18 / 20 | 90% | A | A- | Excellent Work |
| 3 missed | 17 / 20 | 85% | B | B | Good Comprehension |
| 4 missed | 16 / 20 | 80% | B | B- | Solid Effort |
| 5 missed | 15 / 20 | 75% | C | C | Satisfactory Standard |
| 6 missed | 14 / 20 | 70% | C | C- | Minimum Passing Grade |
| 7 missed | 13 / 20 | 65% | D | D | Marginal Pass |
| 8 missed | 12 / 20 | 60% | D | D- | Lowest Passing Credit |
| 9 missed | 11 / 20 | 55% | F | F | Failing Grade |
| 10 missed | 10 / 20 | 50% | F | F | Failing Grade |
| 11 missed | 9 / 20 | 45% | F | F | Failing Grade |
| 12 missed | 8 / 20 | 40% | F | F | Failing Grade |
| 13 missed | 7 / 20 | 35% | F | F | Failing Grade |
| 14 missed | 6 / 20 | 30% | F | F | Failing Grade |
| 15 missed | 5 / 20 | 25% | F | F | Failing Grade |
| 16 missed | 4 / 20 | 20% | F | F | Failing Grade |
| 17 missed | 3 / 20 | 15% | F | F | Failing Grade |
| 18 missed | 2 / 20 | 10% | F | F | Failing Grade |
| 19 missed | 1 / 20 | 5% | F | F | Failing Grade |
| 20 missed | 0 / 20 | 0% | F | F | Failing Grade |
Plus/Minus Grade Scale Reference (20 Questions)
Quick reference table for schools utilizing A+, A, A-, B+, B, B-, C+, C, C-, D+, D, D-, and F.
| Letter Grade | Max Missed Questions | Min Correct Answers | Resulting Percentage |
|---|---|---|---|
| A+ | 0 missed | 20 / 20 | 100% |
| A | 1 missed | 19 / 20 | 95% |
| A- | 2 missed | 18 / 20 | 90% |
| B | 3 missed | 17 / 20 | 85% |
| B- | 4 missed | 16 / 20 | 80% |
| C | 5 missed | 15 / 20 | 75% |
| C- | 6 missed | 14 / 20 | 70% |
| D | 7 missed | 13 / 20 | 65% |
| D- | 8 missed | 12 / 20 | 60% |
| F | 9 missed | 11 / 20 | 55% |
Grading Guidance & Teacher Insights for 20-Question Tests
Standard weekly spelling exams, math quizzes, and chapter checks. Each question carries a weight of 5.0%. Because this test size divides evenly into 100, calculating scores mentally is quick and reliable. A student can drop from an A to a B with just 3 incorrect answers.
Need to grade assignments with variable point weights or unequal question values? Check our Points Grade Calculator or calculate term standings with our Final Grade Calculator.
20-Question Test Grading FAQs
How much is each question worth on a 20-question test?
On a 20-question test, each question is worth exactly 5.0% of the total score (calculated as 100 ÷ 20). Because 100 divides cleanly by this test size, every score produces predictable whole or half percentages.
How many questions can you miss to get an A on a 20-question test?
Under the standard 10-point scale (90% minimum for an A), you can miss at most 2 questions. Scoring 18/20 yields an exact score of 90% (A). Missing 3 drops the score into the B range.
How does rounding work on a 20-question assessment?
On a 20-question exam, each question represents an even decrement of 5.0%. For example, missing 1 question yields exactly 95%, requiring no complex decimal rounding.
Can I print or save this 20-question grading chart as a PDF?
Yes! Use the 'Print / Save as PDF' button on this page. Our high-contrast print stylesheet hides menus and interactive buttons, printing a clean, ink-friendly grade matrix formatted for standard classroom binders and teacher desks.