Grading chart · 20 questions
20 Question Grading Scale: Out of 20 Grading Chart
16 out of 20 is 80%, which is a B- on the standard grading scale. Below is every score from 20/20 down to 0/20 with its percentage, letter grade and number wrong.
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Out of 20 grade calculator
16/20 is
- Wrong answers
- 4
- Each question
- 5%
- Needed to pass
- 12/20
Popular scores out of 20
Tap a score to jump to its row in the chart.
Out of 20 grading chart
Every possible score on a 20-question test. Each question is worth 5%.
| Score | Wrong | Percentage | Grade | Status |
|---|---|---|---|---|
| 20/20 | 0 | 100% | A+ | Passing |
| 19/20 | 1 | 95% | A | Passing |
| 18/20 | 2 | 90% | A- | Passing |
| 17/20 | 3 | 85% | B | Passing |
| 16/20 | 4 | 80% | B- | Passing |
| 15/20 | 5 | 75% | C | Passing |
| 14/20 | 6 | 70% | C- | Passing |
| 13/20 | 7 | 65% | D | Passing |
| 12/20 | 8 | 60% | D | Passing |
| 11/20 | 9 | 55% | F | Not passing |
| 10/20 | 10 | 50% | F | Not passing |
| 9/20 | 11 | 45% | F | Not passing |
| 8/20 | 12 | 40% | F | Not passing |
| 7/20 | 13 | 35% | F | Not passing |
| 6/20 | 14 | 30% | F | Not passing |
| 5/20 | 15 | 25% | F | Not passing |
| 4/20 | 16 | 20% | F | Not passing |
| 3/20 | 17 | 15% | F | Not passing |
| 2/20 | 18 | 10% | F | Not passing |
| 1/20 | 19 | 5% | F | Not passing |
| 0/20 | 20 | 0% | F | Not passing |
Grading notes for a 20-question test
Twenty questions is a standard weekly quiz or short test, and it is the length many spelling programs and textbook quizzes use.
One wrong answer gives 95% (A) and two wrong answers give 90% (A-). To pass with 60%, a student needs 12 correct and can miss up to 8.
Because each question moves the score by 5%, only 9 of the 11 letter grades on the standard scale can actually be earned on this test: A+, A, A-, B, B-, C, C-, D, F. No whole-number score lands on B+, C+. Half-point scores can fill some of those gaps.
Each question is worth exactly 5%, so 18/20 is 90% and 16/20 is 80%. Twenty questions is long enough that one careless error doesn't decide the letter grade, which is why many teachers prefer it to 10-question quizzes for anything that goes in the gradebook.
What you need for each grade out of 20
The fewest correct answers for each letter grade, and how many questions a student can miss.
-
A+
20 of 20 correct (miss up to 0)
-
A
19 of 20 correct (miss up to 1)
-
A-
18 of 20 correct (miss up to 2)
-
B+
18 of 20 correct (miss up to 2)
-
B
17 of 20 correct (miss up to 3)
-
B-
16 of 20 correct (miss up to 4)
-
C+
16 of 20 correct (miss up to 4)
-
C
15 of 20 correct (miss up to 5)
-
C-
14 of 20 correct (miss up to 6)
-
D
12 of 20 correct (miss up to 8)
Each grade starts at its minimum percentage: A+ 97%, A 93%, A- 90%, B+ 87%, B 83%, B- 80%, C+ 77%, C 73%, C- 70%, D 60%.
How to calculate a grade out of 20
- Divide the score by the total
16 ÷ 20 = 0.8 - Multiply by 100
0.8 × 100 = 80% - Read the letter grade
80% → B-
Out of 20 grade FAQ
What is 15 out of 20 as a grade?
15 out of 20 is 75%, a C on the standard US grading scale. That means 5 wrong answers, and it is a passing score.
What is 16 out of 20 as a grade?
16 out of 20 is 80%, a B- on the standard US grading scale. That means 4 wrong answers, and it is a passing score.
What is 18 out of 20 as a grade?
18 out of 20 is 90%, an A- on the standard US grading scale. That means 2 wrong answers, and it is a passing score.
What is 17 out of 20 as a grade?
17 out of 20 is 85%, a B on the standard US grading scale. That means 3 wrong answers, and it is a passing score.
How much is each question worth on a 20 question test?
Each question is worth 100 ÷ 20 = 5 percentage points, so every wrong answer lowers the grade by 5%. If your questions are worth different points, add up the points instead and divide by the total points possible.
How many questions can you miss on a 20 question test and still pass?
With a 60% pass mark you need at least 12 correct out of 20 (60%), so you can miss up to 8 questions and still pass. Some schools use 65% or 70% as the pass mark; you can change it in the test grader settings.
How many do you need for an A or a B out of 20?
An A (93% or higher) needs 19 correct out of 20, so you can miss 1. A B (83% or higher) needs 17 correct, so you can miss 3. On a 10-point scale, where an A starts at 90%, the numbers are a little more forgiving.