クラス名簿
クラス名簿を一度保存すれば全部のツールで使える — ワンクリックでルーレット・グループ・座席・得点板へ送信。無制限、ブラウザ内にのみ保存。
クラス名簿はどこに保存されますか？
すべてこの端末内のブラウザのローカルデータベース（IndexedDB）に保存されます。Cookieやキャッシュよりもはるかに消えにくい保存方法です。アップロードなし・アカウントなしで、児童・生徒の情報が端末の外に出ることはありません — プライバシー方針をご覧ください。名簿を保持するには同じブラウザ・端末をご利用ください。
One list, the whole classroom
Most picker sites make you retype names on every tool. The roster center fixes that: save “Period 2 — Science” once, and every tool on this site gets a Load class dropdown. The wheel, the group generator, the seating chart and the scoreboard (auto-build teams) all read from the same rosters.
Paste straight from Google Sheets or Excel — the first column becomes your list, duplicates can be removed with one click, and classes can be sorted A-Z or shuffled.
FAQ
What is the roster center?
A place to save your class lists once — then load them into the name wheel, group generator, seating chart and scoreboard with one click instead of retyping names everywhere.
How many classes can I save?
Unlimited, free. Multiple periods? Save each as its own class (e.g. “Period 2 — Science”). Nothing is locked behind a paywall.
Where is my data stored?
In your browser's local storage only — no account, no upload, no server copy. That's the COPPA-friendly posture described in the privacy policy.
Can I import from Google Sheets or Excel?
Yes — copy a column of names and paste it into the new-class box; only the first column is used, one name per line. CSV files work the same way.
What happens if I clear my browser data?
Local storage is erased with it, so rosters would be lost — export/copy your names to a spreadsheet termly if that worries you.