$2 trillion trying to improve education, zero results. That is just federal spending. Total spending (state, local, federal) for a high-school graduate has tripled with, again, zero improvement. (All numbers adjusted for inflation.)
There is (or was) ONE federal program that did show results – the Washington, DC Opportunity Scholarships Program. Compared to the local public schools, it produced better results at one-quarter the cost. Naturally the politicians canceled the program.