In the nearly ten years since the attacks by Muslim terrorists on 9/11, people have seen an exponential growth in homegrown radical Islam, or Islamism. Insufficiently recognized and acknowledged, this metastasis has produced its natural, deadly effects: jihad against American citizens on their own soil. Some analysts cite "the narrative" as the driving cause behind rampant radicalization, at home and abroad. The narrative exploits the virulently anti-American propaganda being spread across the world in Muslim communities, from Miami to Mumbai, from Detroit to Dubai. That narrative drives a rapidly escalating fervor of discontent against the West in general and America in particular, which serves to radicalize Muslims who view Americans as their mortal enemies and the cause of all the maladies that afflict Muslims worldwide. With images of Abu Ghraib and other exaggerated embarrassments that twist the reality of America's mission in Iraq and Afghanistan, Islamists garner recruits and begin the radicalization process--on foreign soil, and America's. Far deeper than the "narrative," however, is the Islamists' desire to indoctrinate Muslim youth with the belief that Western-style secular democracy is incompatible with Islam. The Islamists closely tie the notion of an "Islamic upbringing" with the aspiration to establish Islamic states, and implement "shariah," or Islamic law, wherever Muslims live. Such ideas can be inculcated through Islamic schooling, and Islamic schooling is spreading in the United States. In this article, the author explores a troubling component of the charter school movement--publicly funded charter schools organized with a separatist focus, specifically those with an Islamic orientation. He takes a closer look at the network of primary and secondary charter schools operating under the aegis of a shadowy Islamist Turkish nationalist and warns that many such schools, along with their private counterparts, are propagating ideas and beliefs hostile to American principles. (Contains 22 footnotes.)