People talk about “our town” as if it were one shape. It is at least three.
The municipality is the line that puts a reeve or a mayor on the letterhead and a public works crew on the grid. That line is old. It follows townships, rivers, annexations, and the odd forced amalgamation. You pay the municipal bill inside that line.
The school division is a different animal. It was drawn around schools that still existed, or around schools someone hoped would keep existing. A bus can cross three RM lines before it hits the yard. A trustee can represent a ward that has never heard of your council. When a division talks about closing a school, the municipal map is almost decorative.
Health geography is a third animal again. Regions, districts, and catchment areas get redrawn when a government wants a cleaner org chart. The clinic you actually use may sit in a town your ambulance contractor does not treat as home base.
If you are arguing a thing, say which map you are on. “The municipality should save the school” is a moral sentence. It is not a jurisdictional one. “The division’s boundary puts our section in this ward, and this is the enrolment number they used” is a frame. This desk will prefer the second sentence.