[akgfab]

Nice work! This doesn’t hold for all school districts. Some, like New Orleans post Katrina, became all-charter districts such that each school essentially operated as its own district. Other districts serve only elementary school students (as opposed to “Unified” districts). Just heads up that there are edge cases.

[Kon-Peki]

The data is probably coming from the Census [1] through the NECS that the author mentions. If so, the documentation is here [2] (starting on page 4-42) but doesn't mention anything about Louisiana having anything out of the ordinary. It calls out Vermont, Illinois and New Jersey for having some wackiness with "pseudo districts"

[1] https://www.census.gov/geographies/mapping-files/time-series...

[2] https://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp...