What Is an Easy Grader?
Updated July 17, 2026 · 9 min read
An Easy Grader — sometimes called an EZ Grader, quick grader, or teacher's grader — is a simple tool that answers one question fast: if a student got a certain number of problems wrong out of a total, what percentage did they earn?Instead of pulling out a calculator and dividing by hand for every paper in the stack, a teacher marks the wrong answers, glances at the grader, and writes the percentage at the top of the page.
For decades this was a physical cardboard wheel or slide chart sitting on every teacher's desk. Today it lives in your browser. The QuickGrade easy grader is the same idea: set the number of questions, click each wrong answer, and the percentage updates instantly.
The formula behind an easy grader
Every easy grader is doing one calculation:
Grade % = ((Total questions − Wrong answers) ÷ Total questions) × 100
A 20-question quiz with 3 wrong = (17 ÷ 20) × 100 = 85%. A 50-question test with 7 wrong = (43 ÷ 50) × 100 = 86%. There is no rounding, no scaling, no curve — just correct answers as a share of the total. Everything else a grade book does sits on top of that number.
What an easy grader is NOT
An easy grader is not a weighted-grade calculator, a GPA calculator, or a final-grade calculator. Those tools handle categories, weights, and semester averages. An easy grader handles a single assignment. Its job is to turn a stack of papers into percentages as fast as possible so the teacher can move on to feedback.
Who uses easy graders
- Classroom teachers grading daily quizzes, spelling tests, reading checks, and exit tickets.
- Substitute teachers who need a fast, reliable way to score work without knowing the school's grade book.
- Homeschool parents checking worksheets and recording weekly progress.
- Tutors giving students an immediate percentage after a practice test.
- Students self-scoring practice sets or estimating what a paper is likely to earn.
Why teachers still reach for one
Mental math on a 37-question test is where mistakes happen. A teacher grading a class set of 28 papers is doing 28 division problems in a row while also flagging what students missed. The easy grader eliminates the division so the teacher can spend their attention on the part that actually helps students learn: noticing patterns, writing comments, and planning what to reteach.
How to use QuickGrade as your easy grader
- Enter the total number of questions on the assignment.
- Click +1 Wrong each time you mark an answer incorrect (or type the count directly).
- Read the percentage — it updates as you go.
- Optionally check the letter grade against our grading scale chart.
Beyond the percentage
A percentage is the starting point, not the end. Once you have it, you may still need to:
- Convert to a letter grade — see our percentage-to-letter-grade chart.
- Combine it with other assignments in a weighted category — see weighted grades explained.
- Roll it into a semester GPA — use the GPA calculator.
Frequently asked questions
Does an easy grader handle partial credit?
Traditional easy graders assume every question is worth one point. For partial credit, either count each half-wrong as 0.5, or use a points-based total where you enter earned and possible points directly.
Is there a difference between an "EZ Grader" and an "Easy Grader"?
No — those names, along with "quick grader" and "teacher's grader," all describe the same tool. The math is identical.
Can students use it too?
Absolutely. Students self-checking practice work benefit just as much as teachers. It's also a great way for parents to spot-check homework.
Ready to try it? Open the QuickGrade easy grader — it's free, works on any device, and requires no signup.