According to the U.S. Department of Education, "The U.S. Constitution leaves the responsibility for public K-12 education with the states...The primary source of federal K-12 support began in 1965 with the enactment of the Elementary and Secondary Education Act (ESEA)."
State and local funding accounts for more than 80% of education budgets, less than 10% comes from private sources and less than 10% is from the Federal Government.
U.S. Department of Education
In Tennessee the total contribution from the Federal government is 14.3%
Department of Education, TN
Rotten to the Core by Michelle Malkin