Two suggestions...
1) Common Core...how the feds are removing educational control from local (answerable to the public) school boards and the states that are now dropping it.
2) Governmental fiscal numbers and how they are changing the way things such as unemployment and inflation are measured so as to provide “good” numbers. For instance inflation no longer counts food and gas. Do a chart on how the unemployment numbers would compare with the means of measurement during the great depression, and another on the released numbers the fed puts out on unemployment versus the revised numbers issued a month later. Do charts comparing inflation now versus how it would look as measured in the 60s or 70s.
If investigating Common Core also investigate Outcome Based Education and Marc Tucker.