Thanks for the question.
The answer is worse than I had remembered, as Congress created the office of Education in 1867.
A private organization called the General Education Board was formed in 1902, and gave salary money to the US Dept of Ag. agents from 1906 to 1914, as well as to schools from 1902 to 1964 across America. The GEB gave a total of 324.6 Million $ from 1902 to 1964.
[To put the money into perspective, the FIRST 100 Billion Dollar Budget of the US Federal Government occurred in the first year of JFK’s Presidency.]
Congress made Education a Cabinet position in 1980.
Important early dates are 1902, 1903, 1906, 1912, 1914.
Important early names are Rockefeller, Kenyon, Smith, Lever.
Important violations to the US Constitution include the Tenth Amendment.
The above thumbnail summary has been taken from the first 6 Websites from the menus of the following Google Searches:
General Education Board;
US Office of Education.
Many searched articles have detailed their versions of the events, and some have a bibliography.
Great thumbnail, Graewoulf. The progressives have been inculcating this socialist provirus, for quite a long time.