EZGrader is the cardboard slide chart from the teacher supply catalog, rebuilt as a free web tool. If you’ve ever graded a stack of quizzes by sliding a green card to line up “number of questions” with “number wrong”, this site does the same thing — faster, printable, and without the drawer it disappeared into.

Why this site exists

The original EZ-Grader solved one problem beautifully: the division. Twenty-five questions, six wrong — nobody wants to compute (25−6)/25 × 100 thirty times in a row. But the cardboard version fixed one grading scale and topped out around 95 questions. This version keeps the instant chart and adds what the card couldn’t do: three grading scales (strict, standard, lenient), half-point deductions, up to 200 questions, an optional GPA column, and a printout or CSV you can keep.

Where the numbers come from

The math is elementary — score = (total − wrong) ÷ total × 100 — and the letter-grade thresholds are the published conventions teachers actually use: the 10-point scale (A from 90, pass at 60), the stricter 7-point scale (A from 93, pass at 70) still used in a number of districts, and a lenient scale (A from 85, pass at 50) matching standards-based and minimum-50 policies. Every threshold is printed openly on the letter grade scales page so you can check the chart against your own syllabus. GPA points follow the standard unweighted 4.0 convention (A = 4.0, B = 3.0, F = 0.0).

How the site works

Everything runs in your browser with plain JavaScript. There is no account, no upload, and nothing you type — class size, scores, anything — ever leaves your device. The pages work offline once loaded.

Who maintains it

EZGrader is maintained by a small independent team that builds focused utility sites. The standard is simple: numbers a teacher could defend in a department meeting. Found a threshold your district defines differently, or a feature the chart is missing? Contact us — corrections from working teachers are the emails we answer first.