Wet day plans: deciding at 8:40, not improvising at 12:40.

The outdoor duty roster is a solved problem: zones, times, names, published. Rain deletes the zones. What remains is a school full of students, indoors, with a supervision plan written for a playground — and about twenty minutes to invent its replacement.

Improvised wet days follow the same script everywhere: someone grabs whoever is visible, the same agreeable staff say yes, two corridors end up unsupervised because everyone assumed someone else had them, and the classroom teachers who kept their own classes quietly lose the lunch break they were owed. None of that is a people problem. It is a missing-plan problem.

The core of a wet day plan is a fixed mapping: each outdoor duty post converts to a defined indoor post — this zone's teacher takes that corridor, that building's classrooms, the library overflow. The person rostered to the oval at lunch is automatically the person at the Year 3/4 corridor when the wet day timetable is on. One decision switches the whole roster; nobody is recruited in real time.

Design the mapping against indoor geometry, not the org chart: corridors and wet areas where students actually congregate, rooms with capacity limits, stairwells and blind corners, and the walking distance between a teacher's outdoor zone and their indoor post. Walk it once with the map in hand — the mismatches are obvious on foot and invisible on paper.

Every wet day plan needs three named things: who calls it (one role, with a deputy), by when (a decision time before each break — morning call for the day beats a scramble at the bell), and on what triggers (rain, obviously, but also heat, wind, smoke, and waterlogged grounds — the plan is really an "indoor supervision" plan, and the schools that name it that way use it more honestly).

The call then needs one broadcast that reaches everyone the same way every time — staffroom screen, group message, PA — with the same words: "wet day timetable is on for lunch." Staff who hear a consistent signal stop asking the office one by one, which is half the chaos gone by itself.

Indoor duty is duty. If the wet-day conversion quietly adds posts — more corridors than zones, split shifts so teachers get part of their break — those additions must land in the same fairness count as everything else, or winter terms slowly overload the staff whose rooms happen to sit near the busy corridors.

The same applies to classroom teachers who supervise their own class through a wet lunch: that is supervision time too. Whether your school credits it, rotates it, or rosters relief for it is a policy choice — but count it, because staff certainly do.

Supervision is half the wet day; the other half is what 400 students actually do indoors for forty minutes. Rooms with named quiet activities, a film room, board games boxes that only come out on wet days, and clear movement rules between spaces do more for behaviour than any amount of extra supervision. Build this half once too, and refresh it each term — wet-day novelty is a genuine resource and it depletes.

Bell Path stores your outdoor-to-indoor mapping as a standing wet day plan: one action converts the current duty roster to indoor posts, staff see their changed post in the staff portal and on the staffroom display, and the fairness ledger keeps counting through the conversion. Because it works from the live roster, an absence that morning is already reflected — the covering teacher inherits the indoor post too.