A worked moment
Cover, period three, a class you have never met
The cover slip says 8Y, science, room 12. The class list says more than names: attendance worth knowing about, free school meals, and the flags you are authorised to see.
None of it needs a corridor conversation or a favour from the office. It is the class as the school already knows it, opened before the bell.
The lesson may still be lively. Cover often is. But the ten minutes before it were spent knowing the class, not hunting for it.

