I live in Florida and school districts are by county.
This means the school districts are large and fixed administrative expenses can be spread out over large numbers of students to keep costs down.
Where I live school districts are small, and jealously guard their turf.
Some spend money like drunken sailors, often on lavish athletic facilities. Property taxes in those districts are typically 9000+ per year. Sometimes they adjoin districts that don’t have two pots to rub together.
One district does not provide any student busing because state law would require them to also provide transportation for Catholic school students. They’d rather make everyone drive their kids than help a Catholic school.