Student learning depends twice as much on family characteristics as on anything that happens in school. Income inequality has more to do with how well our kids do in school than standardized tests or teacher evaluations.

So why does the public discourse on education focus so much on "reforming" the public schools? Because the corporate "reformers" have everything to gain from diverting public resources to their for-profit projects and everything to lose from promoting discussion of and solutions to poverty and income inequality:

...the topics of poverty and economic inequality will inevitably prompt a conversation about changing the underlying economic policies (regressive taxes, deregulation, etc.) that create crushing poverty and inequality. For corporations served by the existing economic paradigm and for the politicians and activists those corporations underwrite, such a conversation is simply unacceptable because changing the policies that create poverty and inequality potentially threatens their existing financial power and privilege. Thus, those corporations, politicians and activists in the “reform” movement do whatever they can — bash teachers, scream strong-but-meaningless words like “accountability,” criticize public school structures, etc. — to shift the education conversation away from poverty and inequality [David Sirota, "New Data Shows School 'Reformers' Are Full of It,", 2013.06.03].

Your local teachers are not your enemy. Neither are black helicopters. Systemic poverty and concentration of wealth are.