What grade is 12 wrong out of 80?

12 wrong answers leaves 68 correct, which is 85.0%. That is a B on the standard A–F scale and a B on the plus/minus scale.

Can I give partial credit on an 80-question test?

Yes. On an 80-question test, turn on half points in the Quick Grade calculator and a half-credit answer counts as 0.625% instead of 1.25%. The chart on this page uses whole questions only.

80 Questions

80-Question Grading Scale

Each question on an 80-question test is worth 1.25%. On the common 90/80/70/60 scale you can miss up to 8 questions for an A, up to 16 questions for a B, up to 24 questions for a C, up to 32 questions for a D. The chart below shows the percentage and letter grade for every number of wrong answers from 0 to 80.

Custom cutoffs or another test size

Score chart for 80 questions (standard A–F)
Wrong	Correct	Percent	Grade
0	80	100.0%	A
1	79	98.8%	A
2	78	97.5%	A
3	77	96.3%	A
4	76	95.0%	A
5	75	93.8%	A
6	74	92.5%	A
7	73	91.3%	A
8	72	90.0%	A
9	71	88.8%	B
10	70	87.5%	B
11	69	86.3%	B
12	68	85.0%	B
13	67	83.8%	B
14	66	82.5%	B
15	65	81.3%	B
16	64	80.0%	B
17	63	78.8%	C
18	62	77.5%	C
19	61	76.3%	C
20	60	75.0%	C
21	59	73.8%	C
22	58	72.5%	C
23	57	71.3%	C
24	56	70.0%	C
25	55	68.8%	D
26	54	67.5%	D
27	53	66.3%	D
28	52	65.0%	D
29	51	63.7%	D
30	50	62.5%	D
31	49	61.3%	D
32	48	60.0%	D
33	47	58.8%	F
34	46	57.5%	F
35	45	56.3%	F
36	44	55.0%	F
37	43	53.8%	F
38	42	52.5%	F
39	41	51.2%	F
40	40	50.0%	F
41	39	48.8%	F
42	38	47.5%	F
43	37	46.3%	F
44	36	45.0%	F
45	35	43.8%	F
46	34	42.5%	F
47	33	41.3%	F
48	32	40.0%	F
49	31	38.8%	F
50	30	37.5%	F
51	29	36.3%	F
52	28	35.0%	F
53	27	33.8%	F
54	26	32.5%	F
55	25	31.3%	F
56	24	30.0%	F
57	23	28.7%	F
58	22	27.5%	F
59	21	26.3%	F
60	20	25.0%	F
61	19	23.8%	F
62	18	22.5%	F
63	17	21.3%	F
64	16	20.0%	F
65	15	18.8%	F
66	14	17.5%	F
67	13	16.3%	F
68	12	15.0%	F
69	11	13.8%	F
70	10	12.5%	F
71	9	11.3%	F
72	8	10.0%	F
73	7	8.8%	F
74	6	7.5%	F
75	5	6.3%	F
76	4	5.0%	F
77	3	3.8%	F
78	2	2.5%	F
79	1	1.3%	F
80	0	0.0%	F

How an 80-question test is scored

Divide the number of correct answers by 80 and multiply by 100. With 80 questions worth the same amount, each one is 1.25% of the grade. An 80-question exam spreads the risk thinly: each answer is worth just 1.25%, so you can miss several questions before the letter grade moves.

On the common 90/80/70/60 scale you can miss up to 8 questions for an A, up to 16 questions for a B, up to 24 questions for a C, up to 32 questions for a D. Anything below the D line is an F.

Quick reference for 80 questions

These scores come from the same chart you see in the tool above.

0 wrong answers (80 correct) = 100.0%, grade A
1 wrong answer (79 correct) = 98.8%, grade A
2 wrong answers (78 correct) = 97.5%, grade A
3 wrong answers (77 correct) = 96.3%, grade A
8 wrong answers (72 correct) = 90.0%, grade A
16 wrong answers (64 correct) = 80.0%, grade B
24 wrong answers (56 correct) = 70.0%, grade C
32 wrong answers (48 correct) = 60.0%, grade D

Rounding and partial credit on 80 questions

Because 80 does not divide 100 evenly, scores are rounded. For example, 10 wrong is 87.5% exactly and shows as 87.5% rounded to one decimal. The letter is chosen from the rounded value that is displayed.

Half points are possible too: one half-credit answer is worth 0.625%.

Worked example: 10 wrong on an 80-question test

A student misses 10 of 80 questions.

Correct answers: 70 of 80
Percentage: 87.5%
Standard A–F: B
Plus/minus: B+

(80 − 10) ÷ 80 × 100 = 87.5%, so the grade is 87.5% (B).

Grading & Weighting FAQs

Grade Calculator & Scoring FAQs

Clear, mathematically verified answers to common questions about weighted grade averages, grading scales, and final exam target scores.

Each question is worth 100 ÷ 80 = 1.25% when every question has the same weight. Missing one question leaves 98.75%, and each further miss lowers the score by another 1.25 points.

On an 80-question test with the common 90/80/70/60 scale you can miss up to 8 questions for an A. For the other letters you can miss up to 16 questions for a B, up to 24 questions for a C, up to 32 questions for a D. Your teacher’s scale may use different cutoffs, so check the syllabus.

Interactive Tools Available

Test a hypothetical score with our Target Grade Simulator above!