Since 1970 per pupil spending on public education has skyrocketed; while math, english and science skills remain unchanged.
This is a terrible trend, but unions and Democrats want to keep American children in a failed system.
Data suggest that our educational productivity has collapsed: the inflation-adjusted cost of sending a student all the way through the K-12 system has almost tripled while test scores near the end of high-school remain largely unchanged. Put another way, per-pupil spending and achievement are not obviously correlated.