Enter the teacher secret (or sign in as a teacher in a worksheet). Stored only on this device.
Device signing key
Checking…
Grade pending FRQs
Offline grading (mesh)
Sync nearby student phones over Bluetooth/Wi-Fi, auto-grade their submitted work, judge FRQs, then sign — no internet needed. Grades gossip back to the students.
Seal today
Compute every student's head and sign the daily epoch anchor (the O(1)/day class seal).