"Multiple authorizers" refers to situations where more than one entity is able to authorize charter schools in any given community. The presence of multiple authorizers can strengthen a state's charter school sector because a diversity of authorizers can promote professional practices among authorizers and provide checks and balances in charter approval, oversight and renewal decisions. This policy guide discusses the following: (1) Background on Multiple Authorizers; (2) Key Considerations for Policymakers on Multiple Authorizing Options; (3) Recommendations and Best Practices for State Policy on Multiple Authorizers; and (4) Resources and Further Analysis. (Contains 6 endnotes and 8 resources.)