From the summary:
The U.S. Census Bureau conducts the Census of Governments and the Annual Surveys of State and Local Government Finances as authorized by law under Title 13, U.S. Code, Sections 161 and 182. The Census of Governments has been conducted every 5 years since 1957, while the annual survey has been conducted annually since 1977 in years when the Census of Governments is not conducted. The 2015 Annual Survey of School System Finances, similar to previous annual surveys and censuses of governments, covers the entire range of government finance activities—revenue, expenditure, debt, and assets (cash and security holdings).
This report contains financial statistics relating to public elementary-secondary (prekindergarten through grade 12) education. It includes national and state financial aggregates and displays data for the 100 largest school systems by enrollment in the United States….