A significant number of teachers move from one state to another each year. State policies can make it difficult for public school teachers to qualify to teach in another state. From a teacher's perspective, meeting another state's licensure requirements can feel bureaucratic and time-consuming. State requirements for out-of-state teachers enable states to withhold licenses from an applicant who may pose a risk to a state's students or who does not meet its standards. This report presents a brief overview of what states require before hiring an out of state teacher.