NACSA seeks to document and analyze the progression of charter school authorizing practices through its annual authorizer survey. Each year, the organization documents its findings in The State of Charter School Authorizing. Now in its fourth edition, the report highlights trends in authorizing and the use of NACSA's Principles & Standards for Quality Charter School Authorizing to affect the education of thousands of charter school students. This annual report provides an overview of the policies, practices, and characteristics of the nation’s largest charter school authorizers, as well as a sampling of smaller authorizing entities. It also builds upon the data presented in previous reports on NACSA’s authorizer survey.