A recent criminal case in Virginia threw some light on a worrisome aspect of Muslim life in America. Ahmed Omar Abu Ali, a U.S. citizen, was charged with working with al-Qaeda in an attempt to assassinate President Bush. Abu Ali’s family and friends have protested that the accused is a model young man and valedictorian of his high-school class. But it turns out that Abu Ali’s high-school career at a private Islamic school might not be the wisest thing for his family to mention. According to the Associated Press, “The private school’s teachings have come under scrutiny since the September...