Charter schools are an integral part of the public school systems across America, but understanding these complex organizations has proved challenging. One unique attribute of charter school organizational structure is the charter school authorizer. These oversight agencies have a unique role in overseeing, and holding accountable, the schools they authorize. Yet, there is limited empirical research around charter school authorizing practices and their outcomes. In this study, I examined the differences between Michigan charter school outcomes, both academic and operational, by authorizer type. The results of this study indicate a statistically significant difference among authorizers, based on student proficiency, growth, overall performance, and fiscal performance, and student demand. Moreover, the findings suggest that schools authorized by intermediate school districts had the highest student performance of all charter schools in Michigan, followed by schools authorized by higher education institutions (e.g., colleges and universities). Local education authorities (LEA) had consistently, and significantly, lower student performance than schools authorized by other types. Conversely, schools authorized by LEAs had the highest Demand and overall fiscal performance.