I am afraid I must take issue with the title of the article: "Teachers: The Unsung Heroes of School Choice". I realize that what you mean to say is that some teachers are heroes in this area, especially those in your organization. I hope you are correct, and certainly wish you the best in your endeavors.
However it must be flatly stated that teachers, in general, and their unions, specifically, are the largest obstacles to the education of American students. There are astonishingly few "heroes" among us. In fact, American education as a whole is much more akin to organized crime than any other enterprise.