From The Huffington Post: Twenty years after their creation, charter schools constitute the fastest-growing sector of American public education, according to a report released Wednesday. Enrollment in these publicly funded but often privately run institutions rose by more than 200,000 students in the 2011-2012 school year compared to the previous year, the report found. That increasing enrollment has yielded a total of more than 2 million students in charter schools — about 5 percent of the number of kids in public schools across the country.