GradeArc

GradeArc is the grade curve calculator teachers actually want to use. Enter your class's raw scores, pick a curve method, and see every adjusted grade instantly — no account, no internet, no fuss. Five scientifically-grounded curve methods: • Flat Addition — add a fixed number of points to every grade • Scale to 100 — proportionally lift all scores so the highest becomes 100 • Square Root — boost low scores more than high ones • Target Mean — scale the entire class to your chosen average (Pro) • Bell Curve — normalize scores to a target mean and standard deviation (Pro) Instant statistics for every calculation: original and curved averages, highs, lows, and letter grades for every student. Pro features (one-time unlock): • Unlimited grades per session • Batch paste — paste a comma-separated list in one tap • Session history — save and revisit past calculations • Export to CSV or share via any app Fully offline. No account. No data collection. Your grades stay on your device.