Free-market economists should be in hiding, considering the havoc their theories caused when put into practice. What is really ironic is that the education sector could have been the canary in the mine, if anyone had cared to notice. Beginning in the 1950s, the guru of free-market economics, the late Nobel Laureate Milton Friedman, warned against a government-run education system. Government should have a minimal role in a free market, he maintained. His ideas about privatization and deregulation influenced economies around the world, including those of President Ronald Reagan and England's Prime Minister Margaret Thatcher. In education, this meant that parents should have absolute choice of where to send their children to school. Individual choice, not common good, was the mantra for the market economy applied to schools. The voucher was the epitome of free choice in schools. Moreover, free marketers said vouchers would improve all schools because traditional public schools would have to compete for students. Then-Secretary of Education William Bennett once proposed turning Title I into a voucher program. No one beyond a few hyper-fanatics took the proposal seriously. Yet, vouchers for parents--and lesser versions of parent choice, such as charters--have been a background theme in policy discussions for at least 25 years. When the market theorists turned to laws as a stand-in for vouchers, they sometimes characterized legislation as either good or bad. The good laws allowed schools to spring up with little or no regulation or guarantees for parents or the taxpayers who were funding the schools. State officials in Arizona bragged about being the charter state because dozens of schools had been started, some in open fields and none with safety regulations or accountability. Many failed completely, and today many are still failing their students. Arizona has one-sixth of the nation's schools, but according to Gene Glass, professor at Arizona State University, they are labeled underperforming on tests at almost twice the rate of regular public schools. Parental choice was written into the No Child Left Behind Act. Its first intervention allows parents to flee underperforming schools; the second gives parents a choice of supplementary tutoring services. Neither has been very successful. Options for parents under the first intervention are limited, and feedback from hearings on NCLB in 10 states indicated that parents and students wanted their own schools to improve, not to move to other schools. As far as supplementary education services are concerned, for-profit companies have offered ineffectual tutoring that is not integrated with classroom work. Definitive studies of supplementary education services, which I hope are under way, ought to tell us more. Meanwhile, the U.S. House of Representatives took up the voucher idea at a national level in 2004 when it created the D.C. Opportunity Scholarship Program, which awards scholarships of up to $7,500 a year to low-income children for tuition and other fees at participating private schools. In 2003, Anne Bryant, executive director of the National School Boards Association, pointed out the hypocrisy of the action. NCLB is full of accountability measures, she said, but not so the voucher plan. …