Your markbook, roll and teaching diary — in one calm app.
Marks, attendance, behaviour, planning and reports, all connected. It runs on your own computer, works offline, and your students' data never leaves your device.
Free to try for as long as you like · no account needed
Chuck
The markbook, teaching diary and class dashboard for high-school teachers.
- Several classes, A/B-week timetables
- Marks by category with weighting · at-risk radar
- Cross-class teaching diary and roll
Chuck jnr.
One class, every subject — the daybook, roll and assessment tool for junior-school teachers.
- One class, every subject, all year
- Daybook by session · A–E grading by subject
- Daily roll, observations, groups, points & awards
Why teachers like it
🔒 Private by design
Everything you enter stays in your browser on your computer. We never see your students' data. Add a passcode to encrypt it.
✈️ Works offline
Install it once and it opens like any app — on a plane, at home, or when the school Wi-Fi drops out.
🔗 Everything connected
Click a student's name anywhere to add a note. The roll, marks and diary feed one dashboard and printable reports.
💾 Backups made easy
Point it at your OneDrive, Google Drive or iCloud folder and it saves a backup automatically after every change.
🎓 Year after year
Start a new school year in a few clicks. Last year stays safe (read only), and you can reuse last year's lessons.
💳 Pay once
One price per version — no subscription. Free updates within your version, and a 30-day money-back promise.
Made by a classroom teacher
Chuck started as a markbook built for one teacher's own classes — because the spreadsheets and school systems weren't built for the way teachers actually work day to day. It grew from there, shaped by real lessons, real reports and real parent-teacher nights. No investors, no ads, no data mining — just a tool that respects your time and your students' privacy.