The issue is that also, generally speaking, anyone who was legally discriminated against probably lives in a jurisdiction performing poorly in test scores, since all schooling in the US are based on geographic districts funded by local property tax, and due to historic discrimination the formerly discriminated groups also live in areas with lower housing wealth. (A lot of people also moved out of districts with large minority populations when integration was mandated, taking their taxes and wealth with them.)
Want to make a bunch of people very angry? Propose a metropolitan-area wide school district.