Answer :
Informal rules based on tradition have led to D. Local governments are responsible for primary and secondary education because schools have mostly been run directly by the most local governing bodies in America.
Historically speaking, local governing bodies were the ones that introduced schooling for their constituents in one form or the other dating back to the 19th century.
When the U.S. gained independence and switched to a federal system, the local governments were informally left with the power and responsibility to educate their constituents.
In conclusion, this is why government primary and secondary schools are run at a local government level.
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