What is an easy grader chart?

An easy grader chart (also called a grading scale chart or EZ grader) is a quick-reference tool that shows the percentage score and letter grade based on the number of questions on a test and the number answered incorrectly. Teachers use it to instantly convert raw scores to percentages and letter grades without a calculator.

How do I use the grading scale charts on this page?

Find the chart matching your total number of questions (10, 15, 20, 25, 30, 40, or 50). Then look at the row for how many questions the student got wrong. The chart shows the corresponding percentage score and letter grade. You can copy any chart using the copy button for easy reference.

What is the standard grading scale for schools?

The most common grading scale in US schools is: A = 90-100%, B = 80-89%, C = 70-79%, D = 60-69%, F = below 60%. However, some schools use different thresholds. For example, some set A at 93%+, and many colleges consider D (60-69%) as not passing.

How do I convert a raw score to a percentage?

Divide the number of correct answers by the total number of questions, then multiply by 100. For example, if a student gets 17 out of 20 correct: (17 / 20) x 100 = 85%. Our quick reference charts do this math for you instantly.

What is a 4-point GPA scale?

A 4-point GPA scale converts letter grades to a numerical value: A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0. Some schools add plus/minus modifiers (e.g., A- = 3.7, B+ = 3.3). This scale is used by most colleges for admissions and is the standard for calculating cumulative GPA.

What is standards-based grading?

Standards-based grading (SBG) measures student proficiency against specific learning standards rather than averaging all assignments. Students receive scores of 4 (Exceeds), 3 (Meets), 2 (Approaching), or 1 (Beginning) for each standard. This system focuses on mastery of skills rather than point accumulation.

Can AI grade student work automatically?

Yes, AI grading tools like SchoolGPT can provide instant feedback on student writing, evaluate responses against rubrics, and generate detailed feedback. While AI is excellent for formative feedback and initial scoring, teachers should review and finalize grades for high-stakes assessments.

How do I grade a test with different point values per question?

Add up the total points possible, then add the points the student earned. Divide earned points by total points and multiply by 100 for the percentage. For example, if a test has 50 total points and a student earns 42: (42/50) x 100 = 84%, which is typically a B.

What is the difference between weighted and unweighted grading?

Unweighted grading treats all assignments equally, while weighted grading assigns different importance to categories (e.g., tests = 40%, homework = 20%, projects = 30%, participation = 10%). Weighted grading better reflects which assessments are most important for measuring learning.

How do I create a fair rubric for grading?

A fair rubric should have clearly defined criteria, specific performance levels (e.g., Excellent, Proficient, Developing, Beginning), and detailed descriptions for each level. Share the rubric with students before the assignment so they understand expectations. SchoolGPT's Rubric Generator can create standards-aligned rubrics in seconds.

What is the best grading system for elementary school?

Many elementary schools use standards-based grading (4/3/2/1 or E/S/N/U scales) because it focuses on skill mastery rather than point accumulation. This system provides clearer feedback to parents about what their child can and cannot do, and reduces anxiety around letter grades for young learners.

How can I speed up my grading process?

Use these strategies: (1) Grade one question at a time across all papers, (2) Use rubrics for consistency, (3) Leverage AI tools like SchoolGPT for initial feedback, (4) Use multiple-choice for knowledge checks, (5) Have students self-assess with rubrics first, (6) Batch similar assignments together, (7) Use quick reference grading charts for fast score conversion.

Is the easy grader on this page free to use?

Yes, all grading charts, reference tables, and grading scale information on this page are completely free to use, copy, and print. You can also use SchoolGPT's free AI grading tools to generate rubrics and provide student feedback.

How do I handle partial credit when grading?

Establish clear partial credit rules before grading. Common approaches: award half credit for correct process with wrong answer, use a point breakdown for multi-step problems (e.g., 1 point for setup, 1 for process, 1 for answer), or use rubric levels. Consistency is key - apply the same rules to every student.

Grading Tools

Easy Grader for Teachers: Free Grading Calculator & AI Tools

Instantly convert test scores to letter grades with our free grading charts. Quick reference tables for 10 to 50 question tests, plus AI tools that make grading faster and more consistent.

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Grading Charts Available

Quick reference charts for 10, 15, 20, 25, 30, 40, and 50 question tests - ready to copy or print.

Seconds to Grade

Find any score instantly. No more mental math or reaching for the calculator between papers.

AI Tools Included

Rubric generator, assessment builder, and student feedback tool - all free for teachers.

What Is an Easy Grader?

An easy grader (also known as an EZ grader, grading chart, or score-to-grade converter) is a quick-reference tool that helps teachers instantly convert raw test scores into percentage grades and letter grades. Instead of calculating (correct answers / total questions) x 100 for every student, an easy grader chart shows the result at a glance.

Traditional easy graders were physical sliding-scale tools made of plastic or cardboard. Today, digital easy grader charts and AI grader tools make the process even faster. Teachers can look up any score in seconds, copy grading tables into their gradebook, or use AI to generate rubrics and provide automated student feedback.

Below you will find free grading scale reference charts, quick grading tables for tests ranging from 10 to 50 questions, and links to AI-powered grading tools that can save you hours every week.

Grading Scale Reference Charts

Standard grading scales used in US schools. Click "Copy Table" to copy any chart to your clipboard for easy pasting into spreadsheets or gradebooks.

Standard Percentage Grading Scale

Letter Grade	Percentage Range	GPA	Description
A+	97–100%	4.0	Exceptional
A	93–96%	4.0	Excellent
A-	90–92%	3.7	Very Good
B+	87–89%	3.3	Good
B	83–86%	3.0	Above Average
B-	80–82%	2.7	Satisfactory
C+	77–79%	2.3	Average
C	73–76%	2.0	Acceptable
C-	70–72%	1.7	Below Average
D+	67–69%	1.3	Poor
D	63–66%	1.0	Below Standard
D-	60–62%	0.7	Barely Passing
F	0–59%	0.0	Failing

4-Point GPA Scale

Letter Grade	Standard GPA	Percentage	Honors GPA	AP/IB GPA
A	4.0	90–100%	5.0	5.0
B	3.0	80–89%	4.0	4.0
C	2.0	70–79%	3.0	3.0
D	1.0	60–69%	2.0	2.0
F	0.0	0–59%	0.0	0.0

Standards-Based Grading Scale (4-Point Proficiency)

Score	Proficiency Level	Description	Traditional Equivalent
4	Exceeds Standard	Student demonstrates in-depth understanding beyond grade-level expectations. Can apply knowledge in new and complex situations.	A (93–100%)
3	Meets Standard	Student demonstrates proficient understanding of grade-level expectations. Consistently meets the learning target.	B (80–92%)
2	Approaching Standard	Student demonstrates partial understanding. Can perform with support but not yet independently at grade level.	C/D (60–79%)
1	Beginning	Student demonstrates minimal understanding. Requires significant support and intervention to progress.	F (below 60%)

Pass/Fail Rubric Scale

Grade	Percentage Range	GPA Impact	Notes
P (Pass)	70–100%	N/A	Credit granted; not factored into GPA at most institutions
F (Fail)	0–69%	0.0	No credit; may or may not affect GPA depending on school policy
HP (High Pass)	90–100%	N/A	Used by some graduate programs to recognize distinction
LP (Low Pass)	70–79%	N/A	Marginal passing; some programs use this as a warning level

Points-Based Grading Chart (20-Question Example)

Shows how each wrong answer affects the percentage on a 20-question test where each question is worth 5 points (100 total).

# Wrong	Points Earned	Score %	Grade	Impact per Question
0	100/100	100%	A	-5 points (-5%)
1	95/100	95%	A	-5 points (-5%)
2	90/100	90%	A-	-5 points (-5%)
3	85/100	85%	B	-5 points (-5%)
4	80/100	80%	B-	-5 points (-5%)
5	75/100	75%	C	-5 points (-5%)
6	70/100	70%	C-	-5 points (-5%)
7	65/100	65%	D	-5 points (-5%)
8	60/100	60%	D-	-5 points (-5%)
9	55/100	55%	F	-5 points (-5%)
10	50/100	50%	F	-5 points (-5%)

Quick Grading Reference Tables

Find the score for any number of wrong answers on common test lengths. Each chart shows the number wrong, number correct, percentage, and letter grade.

Based on standard grading scale: A = 93%+, B = 83%+, C = 73%+, D = 63%+, F = below 63%

10 Questions 15 Questions 20 Questions 25 Questions 30 Questions 40 Questions 50 Questions

10 Questions

# Wrong	Correct	Score %	Grade
0	10/10	100%	A
1	9/10	90%	A-
2	8/10	80%	B-
3	7/10	70%	C-
4	6/10	60%	D-
5	5/10	50%	F
6	4/10	40%	F
7	3/10	30%	F
8	2/10	20%	F
9	1/10	10%	F
10	0/10	0%	F

15 Questions

# Wrong	Correct	Score %	Grade
0	15/15	100%	A
1	14/15	93%	A
2	13/15	87%	B+
3	12/15	80%	B-
4	11/15	73%	C
5	10/15	67%	D+
6	9/15	60%	D-
7	8/15	53%	F
8	7/15	47%	F
9	6/15	40%	F
10	5/15	33%	F
11	4/15	27%	F
12	3/15	20%	F
13	2/15	13%	F
14	1/15	7%	F
15	0/15	0%	F

20 Questions

# Wrong	Correct	Score %	Grade
0	20/20	100%	A
1	19/20	95%	A
2	18/20	90%	A-
3	17/20	85%	B
4	16/20	80%	B-
5	15/20	75%	C
6	14/20	70%	C-
7	13/20	65%	D
8	12/20	60%	D-
9	11/20	55%	F
10	10/20	50%	F
11	9/20	45%	F
12	8/20	40%	F
13	7/20	35%	F
14	6/20	30%	F
15	5/20	25%	F
16	4/20	20%	F
17	3/20	15%	F
18	2/20	10%	F
19	1/20	5%	F
20	0/20	0%	F

25 Questions

# Wrong	Correct	Score %	Grade
0	25/25	100%	A
1	24/25	96%	A
2	23/25	92%	A-
3	22/25	88%	B+
4	21/25	84%	B
5	20/25	80%	B-
6	19/25	76%	C
7	18/25	72%	C-
8	17/25	68%	D+
9	16/25	64%	D
10	15/25	60%	D-
11	14/25	56%	F
12	13/25	52%	F
13	12/25	48%	F
14	11/25	44%	F
15	10/25	40%	F
16	9/25	36%	F
17	8/25	32%	F
18	7/25	28%	F
19	6/25	24%	F
20	5/25	20%	F
21	4/25	16%	F
22	3/25	12%	F
23	2/25	8%	F
24	1/25	4%	F
25	0/25	0%	F

30 Questions

# Wrong	Correct	Score %	Grade
0	30/30	100%	A
1	29/30	97%	A
2	28/30	93%	A
3	27/30	90%	A-
4	26/30	87%	B+
5	25/30	83%	B
6	24/30	80%	B-
7	23/30	77%	C+
8	22/30	73%	C
9	21/30	70%	C-
10	20/30	67%	D+
11	19/30	63%	D
12	18/30	60%	D-
13	17/30	57%	F
14	16/30	53%	F
15	15/30	50%	F
16	14/30	47%	F
17	13/30	43%	F
18	12/30	40%	F
19	11/30	37%	F
20	10/30	33%	F
21	9/30	30%	F
22	8/30	27%	F
23	7/30	23%	F
24	6/30	20%	F
25	5/30	17%	F
26	4/30	13%	F
27	3/30	10%	F
28	2/30	7%	F
29	1/30	3%	F
30	0/30	0%	F

40 Questions

# Wrong	Correct	Score %	Grade
0	40/40	100%	A
1	39/40	98%	A
2	38/40	95%	A
3	37/40	93%	A
4	36/40	90%	A-
5	35/40	88%	B+
6	34/40	85%	B
7	33/40	83%	B
8	32/40	80%	B-
9	31/40	78%	C+
10	30/40	75%	C
11	29/40	73%	C
12	28/40	70%	C-
13	27/40	68%	D+
14	26/40	65%	D
15	25/40	63%	D
16	24/40	60%	D-
17	23/40	57%	F
18	22/40	55%	F
19	21/40	53%	F
20	20/40	50%	F
21	19/40	48%	F
22	18/40	45%	F
23	17/40	43%	F
24	16/40	40%	F
25	15/40	38%	F
26	14/40	35%	F
27	13/40	33%	F
28	12/40	30%	F
29	11/40	28%	F
30	10/40	25%	F
31	9/40	23%	F
32	8/40	20%	F
33	7/40	18%	F
34	6/40	15%	F
35	5/40	13%	F
36	4/40	10%	F
37	3/40	8%	F
38	2/40	5%	F
39	1/40	3%	F
40	0/40	0%	F

50 Questions

# Wrong	Correct	Score %	Grade
0	50/50	100%	A
1	49/50	98%	A
2	48/50	96%	A
3	47/50	94%	A
4	46/50	92%	A-
5	45/50	90%	A-
6	44/50	88%	B+
7	43/50	86%	B
8	42/50	84%	B
9	41/50	82%	B-
10	40/50	80%	B-
11	39/50	78%	C+
12	38/50	76%	C
13	37/50	74%	C
14	36/50	72%	C-
15	35/50	70%	C-
16	34/50	68%	D+
17	33/50	66%	D
18	32/50	64%	D
19	31/50	62%	D-
20	30/50	60%	D-
21	29/50	58%	F
22	28/50	56%	F
23	27/50	54%	F
24	26/50	52%	F
25	25/50	50%	F
26	24/50	48%	F
27	23/50	46%	F
28	22/50	44%	F
29	21/50	42%	F
30	20/50	40%	F
31	19/50	38%	F
32	18/50	36%	F
33	17/50	34%	F
34	16/50	32%	F
35	15/50	30%	F
36	14/50	28%	F
37	13/50	26%	F
38	12/50	24%	F
39	11/50	22%	F
40	10/50	20%	F
41	9/50	18%	F
42	8/50	16%	F
43	7/50	14%	F
44	6/50	12%	F
45	5/50	10%	F
46	4/50	8%	F
47	3/50	6%	F
48	2/50	4%	F
49	1/50	2%	F
50	0/50	0%	F

How AI Makes Grading Easier

Easy grader charts handle the math, but AI tools handle the feedback. Here is how modern AI grader tools transform the grading process for teachers.

Instant Rubric Generation

Create standards-aligned rubrics in seconds instead of hours. Customize criteria, performance levels, and point values for any assignment type.

Try Rubric Generator

Auto-Generated Assessments

Build multiple-choice, true/false, and short-answer assessments from any topic or standard. AI ensures questions are grade-appropriate and aligned to learning objectives.

Create Assessment

Detailed Student Feedback

Generate personalized, constructive feedback on student work. AI identifies strengths, areas for improvement, and specific next steps for each student.

Generate Feedback

Save 5+ Hours Per Week

Teachers spend an average of 5-7 hours per week grading. AI-assisted grading tools can cut that time by 60-80%, freeing you to focus on instruction and student relationships.

Start Saving Time

Consistent & Bias-Free Scoring

AI applies the same rubric criteria to every student consistently, reducing grading fatigue bias. Especially useful when grading 100+ papers where consistency naturally drops.

Try AI Feedback

Data-Driven Insights

AI grading tools can identify patterns across student work - common misconceptions, skill gaps, and areas where re-teaching is needed. Turn grading into actionable instructional data.

Build Smart Assessments

Grading Strategies for Teachers

Eight time-saving grading strategies used by experienced educators. Combine these with an easy grader chart and AI tools to cut your grading time in half.

Grade One Question at a Time

Instead of grading each student's entire test, grade question 1 for all students, then question 2, and so on. This improves consistency and speed because your brain stays focused on one set of criteria.

Use a Rubric for Everything

Even for short assignments, a simple 3-4 level rubric speeds up grading dramatically. Students also receive clearer feedback when expectations are defined upfront. Use SchoolGPT's Rubric Generator to create them quickly.

Batch Similar Assignments

Group papers by class period or assignment type. Grading similar work in batches creates a rhythm that helps you move faster and maintain consistency across all students.

Set a Timer

Allocate a specific time per paper (e.g., 3 minutes for a short essay, 30 seconds for a worksheet). Timers prevent over-analyzing and keep your grading sessions productive and focused.

Use Quick Codes for Feedback

Create a shorthand system: SP = spelling, GR = grammar, EV = needs evidence, EX = great example. Stamp or write the code, then provide a key. Students learn to decode feedback quickly.

Implement Peer Review First

Have students review each other's work using a simplified rubric before you grade. This catches surface-level errors, teaches self-assessment skills, and reduces the feedback load on you.

Grade for Completion vs. Accuracy Strategically

Not every assignment needs detailed grading. Practice work and homework can be graded for completion (check/check-minus/check-plus), saving deep grading for assessments that truly measure learning.

Leverage AI for First-Pass Feedback

Use AI tools to generate initial feedback on student writing, then review and personalize it. This is especially powerful for writing assignments where detailed comments take the most time.

Types of Grading Systems

Understanding the four main grading systems helps you choose the right approach for your classroom and communicate clearly with students and parents.

Percentage-Based Grading

The most traditional system. Each assignment earns a percentage score, and the final grade is typically an average or weighted average of all percentages.

Pros

Easy to understand
Universally recognized
Simple to calculate

Cons

−Can be demotivating for struggling students
−Averaging can mask learning growth
−Homework and practice can inflate grades

Points-Based Grading

Assignments are worth different point values based on importance. Final grade = total points earned / total points possible. Allows flexible weighting without complex formulas.

Pros

Flexible assignment weighting
Transparent for students
Easy to add extra credit

Cons

−Large assignments can disproportionately affect grades
−Students may focus on high-point items only
−Hard to compare across classes

Standards-Based Grading

Students are assessed on specific learning standards using a proficiency scale (typically 1-4). Focuses on mastery rather than accumulation of points. Gaining popularity in K-8.

Pros

Focuses on learning, not compliance
Clear communication of skills
Students can improve through reassessment

Cons

−Unfamiliar to many parents
−Harder to convert to traditional GPA
−Requires significant mindset shift

Rubric-Based Grading

Uses detailed rubrics with defined performance levels for each criterion. Common for projects, essays, presentations, and performance assessments. Provides rich, specific feedback.

Pros

Detailed, actionable feedback
Reduces subjectivity
Students know expectations upfront

Cons

−Time-consuming to create
−Can feel rigid for creative assignments
−Requires training for consistent use

Grade Smarter, Not Harder

Easy grader charts are a great start, but AI takes it further. Generate rubrics, build assessments, and provide detailed student feedback - all in seconds.

Rubric Generator Assessment Builder AI Feedback Tool

Free for teachers - no credit card required

Easy Grader & Grading FAQ

Stop spending your weekends grading.

Use SchoolGPT's AI grading tools to generate rubrics, create assessments, and provide student feedback in seconds. Your time belongs to you.

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Easy Grader for Teachers: Free Grading Calculator & AI Tools

What Is an Easy Grader?

Grading Scale Reference Charts

Standard Percentage Grading Scale

4-Point GPA Scale

Standards-Based Grading Scale (4-Point Proficiency)

Pass/Fail Rubric Scale

Points-Based Grading Chart (20-Question Example)

Quick Grading Reference Tables

10 Questions

15 Questions

20 Questions

25 Questions

30 Questions

40 Questions

50 Questions

How AI Makes Grading Easier

Instant Rubric Generation

Auto-Generated Assessments

Detailed Student Feedback

Save 5+ Hours Per Week

Consistent & Bias-Free Scoring

Data-Driven Insights

Grading Strategies for Teachers

Grade One Question at a Time

Use a Rubric for Everything

Batch Similar Assignments

Set a Timer

Use Quick Codes for Feedback

Implement Peer Review First

Grade for Completion vs. Accuracy Strategically

Leverage AI for First-Pass Feedback

Types of Grading Systems

Percentage-Based Grading

Pros

Cons

Points-Based Grading

Pros

Cons

Standards-Based Grading

Pros

Cons

Rubric-Based Grading

Pros

Cons

Grade Smarter, Not Harder

Easy Grader & Grading FAQ

Related Resources

Rubric Generator

Assessment Generator

Student Feedback Tool

IEP Goals Examples

Lesson Plan Generator

All SchoolGPT Tools

Stop spending your weekends grading.