Early access · built by a former physics teacher

Grade in class.
Leave on time.

Point your phone at a student's QR code, tap a score, and the grade is recorded — feedback delivered face to face, while it still matters. Walk the room, grade as you go, and take nothing home.

Try the live demo

Free demo with a sample class. No account, no sign-up — and nothing you enter is saved or sent anywhere.

[PLACEHOLDER — hero media: a 20–30 second video (or 3-frame photo strip) of a teacher walking desk to desk: phone points at a code on a student's notebook, the student's name flashes up huge, teacher taps “100”, moves to the next desk. Shot over the teacher's shoulder so no student faces are shown.]

How it works

Students get a code

Use what they already carry — a school ID barcode or badge — or print a sheet of cards from the app. Any QR code or barcode works; it just has to be unique.

Scan → the name pops up

Point your phone. The student's name appears instantly and unmistakably, so you always know whose grade you're about to record — even mid-stride.

Tap a score — or pre-arm one

Tap a quick-score button, or arm a score once and stamp it onto a whole row of scans. Export to your gradebook as CSV; deeper integrations are in development.

[PLACEHOLDER — 3 phone screenshots side by side: (1) the scan screen with a student's name in the big green banner, (2) the armed-grade banner “Armed: 100 — each scan records it”, (3) the grade-history screen. Take these from the real app once the visuals settle.]

Built for the middle of class

Everything is designed around one fact: your attention belongs on students, not on a screen.

⚡ One second per grade

Scan, tap, done. Batch-stamp a row of identical scores with an armed grade. Feedback that's loud enough to see in the corner of your eye — big banners, color, vibration.

🪪 Works with codes students already have

School-ID barcodes, badge QR codes, or printed cards from the app. No student devices, no student accounts, no seating charts to maintain.

📜 Every change is on the record

Grades are an append-only log — every change, when, from which device. If something looks off, the history shows exactly what happened.

💻 Phone in class, laptop at your desk

The same app runs in your browser for roster setup and exports — real keyboard, real tables, no squinting.

📤 Exports that fit your gradebook

CSV export today, shaped so most gradebooks import it cleanly. Google Classroom integration has been prototyped; Clever, ClassLink, and OneRoster support are in development.

📐 Rotate-to-grade in development

The next step: tilt your phone over a printed marker to pick the score — no buttons at all. Field research is already done; it's coming.

Where the product is today

GradeInClass is in early access. The live demo is fully usable with a sample class — scanning, grading, history, and CSV export all work — but there are no accounts yet and nothing you enter is stored or transmitted. If you'd like to be an early classroom tester when accounts land, say hello.

Why this exists

Hi — I'm David Ludlow. I studied applied physics with an emphasis in computer science at BYU, and I've spent my whole career on one obsession: getting rid of tedium — the busywork that keeps smart people from doing the interesting parts of their jobs.

After two years as a software engineer at National Instruments, I became a physics teacher at a low-income high school in Houston. I loved teaching. I was also drowning — and the worst of it was grading. So I hacked together a workflow with an app that scanned QR-like codes, plus a converter that turned the results into a CSV my gradebook could import. I could suddenly grade during class, face to face, while my feedback could still change what a student did next. I stopped taking papers home — everything but the final exam.

Since 2018 I've built math-education software (Graspable Math, GeoGebra). GradeInClass is that Houston hack, rebuilt properly: an app any teacher can pick up, so grading happens in class — and teachers get their evenings back. When teaching is less tedious, more great people stay teachers.

[PLACEHOLDER — photo of David: head-and-shoulders, well lit, plain background, friendly/smiling, roughly square crop, ≥800×800px. A classroom or whiteboard backdrop would be even better than a plain wall.]

Grade in class. Leave on time.