Final answer:
The switch to a square-foot tax can lead to a decrease in the number of school districts to one, as it creates a more uniform basis for taxation and removes disparities in funding caused by property market values.
Step-by-step explanation:
When a property tax, which is based on the market value of houses, is replaced by a square-foot tax, the equilibrium number of school districts can decrease to one. This change might occur if all types of houses (expensive, medium, and cheap) are taxed uniformly based on their size in square footage rather than their market value. Since each household prefers the same level of spending on public education, the revenue from the square-foot tax would be distributed evenly across a single school district, rather than creating disparities based on property values. This move towards a more uniform tax could lead to a reorganization that culminates in one school district, as differences in funding attributed to property market values would be eliminated.