One schedule.
Everyone sees their own.

A change is entered once. Once it is published, every student, teacher, room and duty view updates on its own — no second spreadsheet to keep in step.

• Students see their grade — today, and the week ahead.
• Teachers see their classes, duties, meetings and free periods.
• Coordinators edit a draft, check it, and publish when it is right.
• Friday, testing days and Ramaḍān each keep their own bell times.