Sarah Chen, CAP, PMP · Last reviewed April 28, 2026

Easy Grader / EZ Grader

Whether you call it an easy grader or an EZ grader, this is the same tool teachers use to grade a stack of tests in minutes. Drag the slider — get a percent and letter grade in real time. Add a curve, bonus, or half-credit; edit the grading scale; and download a branded PDF chart for the whole stack. Free, no signup, no email gate. Built by a CAP-certified office manager.

Total questions
Wrong answers

Tip: press W to add a wrong answer, R to reset.

Curve (+ points)
Bonus earned
Options

Edit grade scale (default)
100 %
A
Correct 10 Wrong 0

Grading chart for 10 questions

WrongScoreGrade
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How to use this grader

  1. Set your test size. Use the stepper or type the total number of questions on the test. The slider rescales automatically; the chart at the bottom of the result card rebuilds row by row to match.
  2. Mark wrong answers. Drag the slider for the fastest entry, or click the + stepper, or — keyboard nerds — press W for each wrong answer and R to reset between students. The percent and letter grade update on every input.
  3. Apply a curve, bonus, or half-credit if needed. Add up to 25 curve points, mark earned bonus, or flip on half-credit (½) for partial-credit answers. Toggle decimals if your gradebook tracks tenths of a percent. Edit the scale in place — it persists in the share-link so the next test runs the same way.
  4. Download or share. Hit Download PDF chart for a branded one-page-per-100-rows reference (great for clipping inside the answer-key folder), or hit Share to copy a link with your exact settings — useful for posting in a department channel or saving alongside the test PDF.

Why this grader is different from other EZ-grader sites

Every other free grader in the top 10 SERP ships the same minimum: questions in, wrong in, percent out. Some add a static grade chart; one or two add a +/− toggle. The moment you need anything beyond the bare math — half-credit on a partial-credit answer, a 5-point curve, a bonus question, or a chart you can paper-clip to a stack of papers — most of them either don't support it or hide it behind a Pro paywall. This one keeps every feature free:

  • Slider input. The fastest visual way to grade a stack of tests on mobile (no other top-10 result has one). Pair it with the W hotkey on desktop and you're flying through papers.
  • Editable grade scale, no paywall. Set your own A=92, B=83, etc., and the letter grade re-derives instantly. The scale persists in the URL — bookmark or share the link and your scale comes with it. Most competitors gate this behind a Pro tier.
  • Curve, bonus, half-credit, and decimals — all together. Most competitors offer at most one of these (the rest are either missing or paid). Combine all four if your test needs it.
  • Branded printable PDF chart. Every row from 0 wrong to N wrong, with the current settings reflected and a clean header. Drop it into the answer-key folder and the stack grades itself. None of the SERP competitors offer a printable chart — they show a static one online and stop there.
  • Embeddable widget. Homeschool blogs, ESL teacher sites, tutoring centers, and substitute-teacher resource pages can host this grader on their own page, free, with a one-line iframe. None of the top 10 SERP results offer this.

How this grader works (the math)

The base percentage is the standard arithmetic — correct answers divided by total questions, multiplied by 100. Bonus and curve are additive on top. Half-credit shifts the wrong count by 0.5 per partial answer:

wrongAdjusted = wholeWrong + 0.5 × halfWrong (if half-credit on)

correct = totalQuestions − wrongAdjusted

percent = (correct / totalQuestions) × 100 + (bonus / totalQuestions) × 100 + curvePoints

The letter grade is the highest threshold the percent clears in the active scale. The default +/− scale (A=93, A−=90, B+=87, B=83, B−=80, …) matches the convention used in most US college catalogs (Stanford, UCLA, NYU undergraduate scales) and the common K–12 gradebook default. Toggle +/− off for a whole-letter scale (A=90, B=80, C=70, D=60, F<60).

When bonus points are in play, the percent is allowed to exceed 100 — that's the convention used by EssayGrader and gradecalculator.ai, and how most teacher-facing tools handle bonus. The letter clamps at the top of the scale (an A is still an A whether the student earned 100% or 105%).

Cross-validated against gradecalculator.com (10/10 = 100%, 1 wrong of 10 = 90%, 5 of 10 = 50%) and gradecalculator.ai's editable-scale output. All ten test cases pass on every build via the fixtures runner — see the methodology link below.

Three classroom scenarios

20-question vocab quiz with a 5-point curve

Mr. Patel's 6th-grade vocab quiz had a tough word that almost everyone missed, so he's adding a 5-point curve. He sets Total: 20, drags the slider for each student (3 wrong → 90%, A− on the default scale; with the +5 curve, 3 wrong → 95%, A). He hits Download PDF chart, gets a one-page reference with every row from 0 wrong to 20, paperclips it to the answer key, and grades the stack in 8 minutes flat. Pair with a red gel pen (smooth, doesn't bleed through 20 lb copy paper) and a teacher planner for the gradebook entry.

50-question chapter test with bonus question

Ms. Liang's bio chapter test has 50 questions plus 2 bonus. A student misses 4 and earns both bonus points: Total: 50, Wrong: 4, Bonus: 2, half-credit off — result: 96%, A. The percent shows above 100 only if the student misses zero regular questions and earns bonus, which is what teachers expect. She copies the share link to her grading thread so the rest of the department uses the same settings on the parallel sections. Hand each student a sharpened mechanical pencil at the start of the period and the whole flow — test → grade → log — runs in under 30 minutes.

Tutor running a 25-question math drill with half-credit

Priya tutors 6th-grade pre-algebra. Her drill awards full credit for the right answer and the right work, half-credit for the right work but a transcription error. Today's student got 18 fully right, 2 partially right, and 5 wrong: Total: 25, Wrong: 5, half-credit on, ½-Wrong: 2 — result: 76%, C. She turns decimals on for parents who want the exact figure (76.0%) and shares the link with the parent so they can see the breakdown. The session runs on a stack of free printable lined paper — narrow rule, 5 pages per student.

Frequently asked questions

Is "easy grader" the same as "EZ grader"?

Yes — they're two spellings of the same tool. Teachers who learned grading with the original cardboard EZ Grader slide chart (the one with the perforated tab in every teacher supply closet for fifty years) tend to type "ez grader." Teachers who came up on Google tend to type "easy grader." This page is the digital version of both. The math, the grading scale, the curve and bonus and half-credit logic, and the printable chart are identical no matter which keyword brought you here.

Is this easy grader free? Do I need to sign up?

Yes free, no signup, no email, no login wall. Every feature on this page — slider input, curve, bonus, half-credit, decimals, custom grade scale, PDF chart, share link, and the embeddable widget — is free. There is no Pro tier. Most of the competing online graders gate at least one of these features behind a paid subscription; this one doesn't.

How do I edit the grade scale?

Click Edit grade scale below the toggles to expand the editor. Each letter is a threshold input — type 92 next to A− and the cutoff for A− becomes 92%. Changes update the result and the chart on the right immediately, and the modified scale persists in the share URL so anyone you link to runs the same scale. Hit Reset to default to roll back to the standard US scale (A=93, A−=90, B+=87, B=83, B−=80, …).

Why does the percent go above 100 when I add bonus?

That's the convention most teacher tools use — bonus is added on top of the base percent, so a student with no wrong answers and 2 earned bonus points on a 50-question test scores 104%. The letter grade clamps at the top of the scale (A stays A), but the raw number reflects what the student earned. If your gradebook caps at 100, it'll cap there automatically when you enter the score.

Can I share my exact setup with another teacher?

Yes — hit the Share button. The link contains your total questions, current wrong count, curve, bonus, decimals/half/+− toggles, and any custom grade scale, so the recipient opens the same configuration. This is the fastest way to standardize grading across parallel sections of the same course.

How do I print or save the grading chart?

Hit Download PDF chart. You'll get a Letter-sized PDF with the full row-by-row chart (every row from 0 wrong to your total), the current settings reflected at the top, and a clean DeskRated header. Multi-page PDFs paginate cleanly for any test size up to 500 questions. Most teachers paperclip the printed chart to the answer key for the day's stack. There's no watermark or branding-tax on the chart — it's yours.

Once the math is solved, the bottleneck is the desk: red ink that smudges on photocopy paper, dull pencils, and a planner that doesn't fit your gradebook are what slow the stack down. After a decade of office testing, three products do most of the work:

  • Best Teacher Planners — for logging per-period grades, tracking late-policy adjustments, and anchoring the weekly seating chart. The five planners worth buying differ in monthly-spread layout, gradebook page density, and lay-flat binding.
  • Best Gel Pens — red ink that doesn't smudge, doesn't indent the next page in the stack, and dries in under three seconds. Gel ink is the right tool for grading; ballpoint is too slow and bleeds through copy paper.
  • Best Mechanical Pencils — for the students' side of the desk. A 0.5 mm or 0.7 mm lead with a real eraser is what you hand out at the start of a test so nobody loses 90 seconds to a pencil sharpener.

Methodology & sources

  • Default letter scale matches the standard US college catalog convention (≥93 A, ≥90 A−, ≥87 B+, ≥83 B, ≥80 B−, ≥77 C+, ≥73 C, ≥70 C−, ≥67 D+, ≥63 D, ≥60 D−, <60 F). Sources: Stanford Bulletin (2025-26), UCLA General Catalog (2025-26), NYU undergraduate grading scales.
  • Whole-letter scale (≥90 A, ≥80 B, ≥70 C, ≥60 D, <60 F) is the standard US K–12 reporting convention used by most state-level gradebook software (PowerSchool, Infinite Campus, Skyward) when the +/− option is disabled.
  • Half-credit and partial-credit grading follow standard pedagogical practice documented in Popham WJ. Classroom Assessment: What Teachers Need to Know (Pearson, 2017) and the AERA / APA / NCME Standards for Educational and Psychological Testing (2014).
  • Cross-validated against gradecalculator.com (default 10-question chart), gradecalculate.com (default scale thresholds), and gradecalculator.ai (editable-scale output) for the standard cases (10/10, 1/10, 5/10).
  • Test fixtures — 10 input/output cases assert correctness on every build via scripts/validate-tool-fixtures.mjs. Drift = build fails.

Disclaimer: Use a calculator-only tool as a fast cross-check, not a system of record. Final grades, weighted categories, late penalties, and rubric adjustments should be reconciled with your school's gradebook (PowerSchool / Infinite Campus / Google Classroom / etc.) and your district's grading policy. About Sarah Chen · Last reviewed April 28, 2026.

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