It seems to me that the most effective change that could ever be made in society has to do with breaking the public school monopoly. Despite the influence of bad philosophy in the higher educational levels, it seems that most intellectually honest people can work, and have as necessary, worked around it.
My personal experience is that most people I know who do not, fail to reject unsound philosophical premises because of an innate bias tied to their education since childhood. Moreover, the vast majority of functional adults do not bother learning the intricate details of higher-level philosophy, and rather act upon what they assimilated in the earlier years of their education.
I also believe that given competition, fact and reality based schooling, that regards indivdualism and the opportunity of the individual to learn facts would out perform progressive education any day.
That said, it seems that the most important immediate policy change that would do the most towards laying the groundwork for a return to reason in our society would be breaking the public schools.
I have, therefore, a legal question for the great minds out there. Ignoring the propriety of whether the state should mandate schooling, tax and fund schooling, etc. answer this: in what way is mandated public schooling not an infringement of the first ammendment? After all, how can you teach even one idea, and not consider it an endorsement of that idea over another?
Public schools tend to dance around issues while they happen to be controversial, pretending to an air of neutrality, but that charade is demonstrably false. In order to teach you must endorse countless ideas, whether of a religious nature or not. The First Ammendment, to my knowledge has not been interpreted this way. But doesn’t the freedom of speech and clause against the endorsement of religion implicitly deny the state the right to mandate a certain form of schooling.
The practical consequence of this interpretation is that the state would have to basically offer all the money they spend per student on public schooling back to the parents to spend on whatever school they choose. Yes, there might still be a progressive taxation scheme, yes there would still be publically run schools (for a while, and even then forced to compete), yes the state might want to accredite the other insitutions, but in the end no parent would be forced to pay explicitly for one educational system endorsing one worldview, and one way to teach it.
Is there any case for such an argument? If you brought historical information about progressive schooling, studies that show its ineffectiveness, analyses that show its singular world view, etc., and argued that forcing taxpayers with children to send their kid to public school or pay twice was a first ammendment violation, could you win?