School choice is a central debate in education policy today, with advocates of charter schools, vouchers, and private schools arrayed against defenders of the government-run public schooling model. While many states have adopted some kind of school choice program, some politicians denounce this trend as a stalking horse for segregation or a corporatist dystopia. In the new issue of Cato Policy Report, Kevin Currie-Knight explains how understanding the views of 20th century libertarian theorists is critical to understanding the debate over school choice in the 21st century. Also in this issue, David Boaz discusses the pressure think tanks face in a time of rising partisanship and tribalism.