I have long been trying to advocate community based text books, using the Creative Commons type license. Imagine the combined intellect of all the worlds teachers contributing to a systematic learning collection of textbooks.
I am positive that the books would be much cheaper to produce. And as a bonus each student would be able to write notes( in them ) and keep the text for as long as needed. Perhaps even giving each student the entire course on a CD, to help prevent DeadTree versions.
It would prevent both Right wing and Left wing people from undue influence in the material, and the long term ability to cross check facts and provide alternate viewpoints.
I am not sure how this would play out with the teacher's unions and the school districts though