Members of the Regional Educational Laboratory (REL) Mid-Atlantic training and supporting excellent educators alliance indicated they do not have critical information about cross-state teacher movements and other specifics they need to understand and address teacher mobility in their states. In response to their request, REL Mid-Atlantic assessed the feasibility of obtaining teacher data from relevant state education data agencies, linking those data across states, and using those data to answer stakeholders' questions about teacher mobility. A feasibility assessment will help stakeholders understand which questions about regional teacher mobility can and cannot be answered using existing administrative data and prioritize the questions that are of most interest to those stakeholders. This feasibility assessment aimed to help stakeholders understand which questions about regional teacher mobility can and cannot be answered using existing administrative data and better prioritize the questions that were of most interest to those stakeholders.