The Milton and Rose D. Friedman Foundation has a useful new report out that assesses regulation of private schools in all fifty states, assigning letter grades according to market freedom.

Many of the criteria used are similar to those considered in the private schools section of the Cato Education Market Index (an overall ranking of educational freedom and incentives across all school types in the 50 states and 2 nations), but they’ve added a few extras (e.g., regulations on class sizes and libraries) and lent additional detail to others (e.g., a breakdown of different types of curriculum regulation). Kudos to the Foundation and author Christopher Hammons for an illuminating report.